JP4612079B2 - Blowing air flow distribution simulation method and blowing air flow distribution simulation program - Google Patents

Description

  The present invention relates to a blown air flow distribution simulation method and a blown air flow distribution simulation program of an orthogonal lattice system for predicting a blown air flow distribution from an anemostat type blower outlet by numerical fluid analysis.

In general, when examining the thermal environment and air environment in a building, it is necessary to simulate the airflow distribution from the outlet. As a conventional simulation method of this type, for example, there is known a simulation method of a blown air flow distribution from an anemostat type blower outlet using CFD (Computational Fluid Dynamics) (Non-Patent Document 1, 2, 3, 4).
Study on modeling method of anemostat type outlet in CFD (Part 1) Experiment of flow field around outlet in isothermal field and CFD analysis of unstructured grid system: Proceedings of Academic Lecture Meeting of Air Conditioning and Sanitary Engineering {2001.9.26〜 28 (Kyoto)} Study on modeling method of anemostat type outlet in CFD (Part 2) BOX method and P. V. Structured Grid CFD Analysis when Applying Method: Proceedings of Academic Lecture Meeting of Japan Society for Air Conditioning and Sanitary Engineering {2001.9.26-28 (Kyoto)} Application of Computational Fluid Dynamics CFD to Indoor Environment (2) Fundamentals of CFD Analysis (1) Fundamental Equation: Air Conditioning and Sanitary Engineering Vol.71 No.7 Application of Computational Fluid Dynamics CFD to Indoor Environment (2) Fundamentals of CFD Analysis (Part 2) Fundamental Equation: Air Conditioning / Hygiene Engineering Vol.71 No.7

  However, in the conventional blowout airflow distribution simulation method as described above, it is necessary to determine the blowout outlet to be used for the simulation after conducting experiments on the size, blowout method, and blowout air volume of each anemostat type blowout outlet. It was. In addition, since a virtual wind speed setting area is set in the air portion near the air outlet and the air flow is reproduced using the wind speed in that area measured in the experiment as an input condition, in order to determine the air speed, It was necessary to conduct experiments on the size of the outlet and the amount of blown air. Further, it is necessary to newly set the outlet shape on the simulation every time the blowing direction is different between the cooling mode and the heating mode. As described above, the conventional blown air flow distribution simulation method has a problem in that many man-hours are required in simulation and input work, and it takes time to obtain a simulation result, and human error such as an input error is likely to occur.

  In addition, since the conventional blowout air flow distribution simulation method uses only the blowout air velocity in the normal direction from the air outlet in the cooling mode, the air velocity distribution at the air outlet is not concentric and reproduces the actual air flow distribution. There was also a problem that it was difficult to do.

  The present invention has been made to solve the above-described problems, and can reduce the number of man-hours for simulation and input work and the time required to obtain simulation results, and can also generate human errors such as input mistakes. It is an object of the present invention to provide a blown air flow distribution simulation method and a blown air flow distribution simulation program that can prevent the air flow distribution and can easily reproduce the actual air flow distribution.

  The present invention is an orthogonal lattice type air flow distribution simulation method for predicting an air flow distribution from an anemostat type air outlet by numerical fluid analysis, and when the anemostat type air outlet is a round shape, Dividing into grids, each of the four grids has two horizontal outlets and one vertical outlet to form a simulation outlet, and when the anemostat type outlet is square Is divided into nine grids, and for the four corner grids of the eight grids excluding the central part, two horizontal outlets and one vertical outlet are set respectively, and among the eight grids, For the four grids other than the four corners, a simulation outlet is set by setting one horizontal outlet and one vertical outlet, and the anemosta A blowing air amount setting step for setting the blowing air amount of the vertical air outlet and the horizontal air outlet of the simulation air outlet, respectively, by dividing the total air volume of the G-type air outlet into a predetermined ratio, and the anemostat type air blowing By setting the neck area from the neck diameter of the outlet, and dividing the blowing air volume of the vertical outlet and the horizontal air outlet of the simulation outlet set in the blowing air volume setting step by the neck area, respectively. The blowout air velocity setting step for setting the blowout air velocity at the vertical air outlet of the simulation air outlet and the blowout air velocity at the horizontal air outlet, and the air flow rate at the vertical air outlet of the simulation air outlet set in the blowout air amount setting step. And the amount of blown air at the horizontal outlet and the simulation set in the blown air speed setting step. A blown air flow analysis step for analyzing a blown air flow distribution from the anemostat type blower outlet based on a blown wind speed of a vertical blower outlet and a blown wind speed of a horizontal blower outlet .

  In the blown air flow distribution simulation method according to the present invention, in the cooling mode, the blown air volume setting step includes a flow rate of 4/11 to 5/11 of the total blown air volume of the anemostat type air outlet. The air flow rate of the vertical air outlet is set, the remaining air volume is set to the air flow rate of the horizontal air outlet, and the air flow speed setting step sets the square number of the neck diameter to the neck area, and sets the air flow rate. By dividing the blowout air volume of the vertical outlet of the simulation outlet set in the step by the neck area, the blowout air speed of the vertical outlet is set, and the simulation airflow set in the blowout air volume setting step is set. It is preferable to set the blown air speed of the horizontal air outlet by dividing the amount of air blown from the horizontal air outlet of the outlet by the neck area. There.

  Further, according to the blowout air flow distribution simulation method of the present invention, when the anemostat type outlet is in a round shape and is in a cooling mode, the blowout air amount setting step includes 4/11 of the total outlet airflow of the anemostat type outlet. The flow rate of ˜5 / 11 is set to the blowout air amount of the vertical outlet of the simulation outlet, the remaining air amount is set to the blowout air amount of the horizontal outlet, and the blown air speed setting step is a square of the neck diameter. The number is set to the neck area, the blown air speed of the vertical blower outlet of the simulation blower outlet set in the blown air volume setting step is divided by the neck area to set the blown air speed of the vertical blower outlet, By dividing the blown air volume of the horizontal outlet of the simulation outlet set in the blown air volume setting step by the neck area The normal air blowing speed of the horizontal air outlet is set, and the horizontal air blowing speed in the normal direction of the horizontal air outlet is multiplied by any value in the range of 0.2 to 0.3. A tangential blown air speed is set, and the blown air flow analysis step includes the blown air flow rate of the vertical blowout port and the horizontal blower airflow amount set in the blown air amount setting step, and the blown air velocity setting. The blowout from the anemostat type blower outlet based on the blowout wind speed at the vertical blowout outlet of the simulation blowout outlet, the blowout wind speed in the normal direction of the horizontal blowout outlet, and the blowout wind speed in the tangential direction of the horizontal blowout outlet set in the step It is preferable to analyze the airflow distribution.

  Furthermore, in the blowout air flow distribution simulation method of the present invention, in the heating mode, the blowout air volume setting step is configured such that the airflow of 3/5 to 2/3 of the total airflow of the anemostat-type air outlet is the simulation air outlet. The air flow rate of the vertical air outlet is set, the remaining air volume is set to the air flow rate of the horizontal air outlet, and the air flow speed setting step sets the square number of the neck diameter to the neck area, and sets the air flow rate. By dividing the blowout air amount of the vertical air outlet of the simulation air outlet set in the step by the neck area, the blowout air speed of the vertical air outlet is set, and the simulation airflow set in the blowout air amount setting step is set. It is preferable to set the blown air speed of the horizontal air outlet by dividing the amount of air blown from the horizontal air outlet of the outlet by the neck area. .

  The present invention is also a blown air flow distribution simulation program for causing a computer to execute the above-described blown air flow distribution simulation method.

  According to the present invention, since the blowout air volume and the blowout air speed of the simulation air outlet are determined by formulating the neck diameter of the anemostat type air outlet and the total airflow volume as variables without performing an experiment each time, The number of man-hours can be reduced in simulation and input work, the time until obtaining the simulation result can be shortened, and the occurrence of human error such as an input error can be prevented. Further, since the blown air flow diffuses concentrically in the cooling mode, the actual air flow distribution can be easily reproduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a hardware configuration of a computer system used for carrying out a blown air flow distribution simulation method according to an embodiment of the present invention, and this computer system includes each component means of the computer system. A CPU (Central Processing Unit) 1 for controlling the CPU, a memory 2 for temporarily storing various data and programs, a hard disk 3 for storing a control program executed by the CPU 1, a liquid crystal display device, etc. A display 4 and an input device 5 such as a mouse or a keyboard are connected to each other via a bus 6. This computer system functions as a blown air flow distribution simulation system by installing a blown air flow distribution simulation program, and predicts the blown air flow distribution from the anemostat type blower outlet by numerical fluid analysis (CFD). The method for simulating the system's blown air flow distribution is implemented.

  FIG. 2 is a functional block diagram showing the software configuration of the blown air flow distribution simulation system for executing the blown air flow distribution simulation method according to the embodiment of the present invention. The blown air flow distribution simulation system includes a predetermined number of horizontal air outlets. And the outlet setting unit 7 that configures the outlet for simulation by setting the vertical outlet, and the vertical outlet and the horizontal outlet of the outlet for simulation by distributing the total air volume of the anemostat type outlet to a predetermined ratio. The blowout air volume setting unit 8 for setting each of the blowout airflows, and the neck diameter of the anemostat-type airflow outlet, the vertical airflow of the simulation airflow outlet, and the vertical airflow of the simulation airflow outlet And a blowing air speed setting unit 9 for setting each blowing air speed of the horizontal air outlet, and a simulation The anemostat type air outlet is subjected to numerical fluid analysis (CFD) based on the blowout air volume of the vertical air outlet and horizontal air outlet of the air outlet and the speed of each air outlet of the vertical air outlet and horizontal outlet of the simulation air outlet. It is comprised from the blowing air flow analysis part 10 which analyzes the blowing air flow distribution from.

  Next, the blowout air flow distribution simulation method according to the embodiment of the present invention in the cooling mode will be described with reference to FIGS.

FIG. 3 is a flowchart showing the flow of the blown air flow distribution simulation method according to the present embodiment. First, in step 10, the type (round or square) of the anemostat type outlet for executing the blowing air flow distribution simulation, the size (m) of the neck diameter L, and the amount of air blown from the anemo type outlet (m ³ / h) is input, in the next step 20, the outlet setting unit 7 sets the configuration of the simulation outlets 11 and 14.

  Specifically, when the type of the anemostat type air outlet is a round shape, as shown in FIGS. 4 and 5, the air outlet setting unit 7 has four rectangular parallelepiped shapes (one side is L). / 2 and L / 4) and is divided into two lattices 11a, 11b, 11c, and 11d. As shown in FIG. 6 and FIG. The horizontal air outlet 12 and one vertical air outlet 13 are set.

  On the other hand, when the type of the anemostat type outlet is a square type, as shown in FIGS. 8 and 9, the outlet setting unit 7 has nine rectangular parallelepiped shapes (one side is L / L). 3 and a height of L / 4) is divided into lattices 14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, and 14i, and 8 as shown in FIGS. 10 and 11, excluding the central lattice 14i. Of the four grids 14a, 14b, 14c, 14d, 14e, 14f, 14g and 14h, two horizontal outlets 15 and one vertical outlet 16 are provided for the four corner grids 14a, 14c, 14e and 14g. The four lattices 14b, 14d, 14f, and 14h other than the four corners of the eight lattices 14a, 14b, 14c, 14d, 14e, 14f, 14g, and 14h are each provided with one horizontal blow. Setting the mouth 15 and one vertical outlet 16.

  In the next step 30, the blown air volume setting unit 8 distributes the total blown air flow Q of the anemostat type blower outlet input in the step 10 to a predetermined ratio, and the vertical blower outlets 13 and 14 of the simulation blower outlets 11 and 14. 16 and the horizontal air outlets 12 and 15 are set respectively.

  Specifically, the blowout air amount setting unit 8 blows out the airflow of 4/11 to 5/11 of the total blown airflow Q of the anemostat type air outlet from the vertical air outlets 13 and 16 of the simulation air outlets 11 and 14. The air volume Qp is set, and the remaining air volume is set to the blown air volume Qn of the horizontal outlets 12 and 15.

  In the next step 40, the blown air speed setting unit 9 sets the square number of the neck diameter L input in the step 10 as the neck area, and the blown air amount of the vertical air outlets 13 and 16 of the simulation air outlets 11 and 14. By dividing Qp by the neck area, the blown air speed Vp of the vertical outlets 13 and 16 is set.

  And when the type of an anemostat type blower outlet is a round type, the blown air velocity Vn in the normal direction of the horizontal blower outlet 12 is obtained by dividing the blown air volume Qn of the horizontal blower outlet 12 of the simulation blower outlet 11 by the neck area. Is set, and the blowing air speed Vt in the tangential direction of the horizontal air outlet 12 is set by multiplying the blowing air speed Vn in the normal direction of the horizontal air outlet 12 by any value in the range of 0.2 to 0.3. .

  On the other hand, when the type of the anemostat type outlet is a square type, the normal direction of the horizontal outlet 15 is obtained by dividing the amount of blown air Qn in the normal direction of the horizontal outlet 15 of the simulation outlet 14 by the neck area. The blown wind speed Vn is set. In this case, the blowing air velocity Vt in the tangential direction of the horizontal air outlet 12 is not set.

  In the next step 50, when the type of the anemostat-type outlet is round, the outlet air flow analysis unit 10 sets the outlet air amount Qp of the vertical outlet 13 of the simulation outlet 11 set by the outlet air amount setting unit 8 and The blown air volume Qn of the horizontal air outlet 12, the blown air speed Vp of the vertical air outlet 13 of the simulation air outlet 11 set by the blower air speed setting unit 9, the normal airflow speed Vn and the horizontal air outlet of the horizontal air outlet 12. Numerical fluid analysis (CFD) is performed on the basis of the tangential blowout air velocity Vt to analyze the airflow distribution from the anemostat type air outlet. In addition, since the numerical fluid analysis (CFD) in this case is performed using, for example, a known analysis method described in Non-Patent Document 3 or 4 described above, a detailed description thereof is omitted here.

  On the other hand, when the type of the anemostat type outlet is a square type, the outlet air flow analysis unit 10 sets the outlet air amount Qp of the vertical outlet 16 of the simulation outlet 14 set by the outlet air amount setting unit 8 and the horizontal outlet 15. The numerical fluid analysis based on the blown air flow rate Qn, the blown air velocity Vp of the vertical air outlet 16 of the simulation air outlet 14 set by the blown air velocity setting unit 9 and the normal airflow velocity Vn of the horizontal air outlet 15 ( CFD) is performed to analyze the airflow distribution from the anemostat type air outlet.

12 to 17, in a round anemostat type outlet having a neck diameter of 60 cm (# 60 size), the total outlet air quantity Q is 3150 m ³ / h, and the outlet air quantity Qp of the vertical outlet 13 is 1431.8 m ^3. / H, the blown air volume Qn at the horizontal outlet 12 is 1718.2 m ³ / h, the blown wind speed Vp at the vertical outlet 13 is 1.10 m / s, and the blown wind speed Vn in the normal direction of the horizontal outlet 12 is 1.33 m. / S, and the blowing air velocity Vt in the tangential direction of the horizontal air outlet 12 is 0 m / s (0% of the air blowing velocity Vn in the normal direction of the horizontal air outlet 12, see FIG. 12), 0.27 m / s (horizontal 20% of the blown air velocity Vn in the normal direction of the air outlet 12 (see FIG. 13), 0.40 m / s (30% of the airflow velocity Vn in the normal direction 12 of the horizontal air outlet, see FIG. 14), 0.53 m / S (4 of the blowing air velocity Vn in the normal direction of the horizontal air outlet 12 %, See FIG. 15), 0.80 m / s (60% of the blowing air velocity Vn in the normal direction of the horizontal outlet 12, see FIG. 16), 1.33 m / s (blowing in the normal direction of the horizontal outlet 12 It is a figure which shows the simulation result of the blowing air flow distribution when it changes with 100% of the wind speed Vn (refer FIG. 17) (In addition, the outside solid line part in FIGS. 12-17 is the time of residual wind speed 0.25m / s. The inner broken line portion shows the air flow distribution when the residual wind speed is 0.5 m / s). From these figures, the planar airflow distribution from the simulation outlet 11 is almost concentric. The tangential direction of the horizontal outlet 12 and the normal direction of the horizontal outlet 12 Vn. It turns out that it is a case where it sets to 20 to 30% of.

  Further, FIG. 18 shows that in the round anemostat type outlet, the neck wind speed is 3.0 m / s, the tangential direction blowing speed Vt of the horizontal outlet 12 is 25, which is the blowing speed Vn in the normal direction of the horizontal outlet 12. %, The air volume 5/11 of the total air volume Q of the anemostat type air outlet is set to the air volume Qp of the vertical air outlet 13 of the simulation air outlet 11, and the remaining air volume is set to the air volume Qn of the horizontal air outlet 12. When the setting is made and the neck diameter (anemo size) is changed to 12.5cm (# 12.5), 20cm (# 20), 30cm (# 30), 40cm (# 40), 60cm (# 60) It is a figure which respectively shows the measurement result of the horizontal diffusion radius at the time of residual wind speed 0.50 m / s, and the horizontal direction diffusion radius at the time of residual wind speed 0.25 m / s. From this figure, it can be seen that the simulation result by the blowout air flow distribution simulation method according to the present embodiment substantially matches the catalog value of the outlet manufacturer. Therefore, according to the blowing air flow distribution simulation method according to the present embodiment, the actual air flow distribution can be easily reproduced.

  Next, the blowing air flow distribution simulation method according to the embodiment of the present invention in the heating mode will be described with reference to FIGS. 3 and 19 to 22.

In step 10 of FIG. 3, first, the type (round or square) of the anemostat type outlet for executing the blowout air flow distribution simulation, the size (m) of the neck diameter L, and the outlet from the anemone outlet When the air volume (m ³ / h) is input, in the next step 20, the outlet setting unit 7 sets the configuration of the simulation outlet. Note that a specific configuration method is the same as that in the above-described cooling mode, and thus detailed description thereof is omitted here.

  In the next step 30, the blown air volume setting unit 8 distributes the total blown air volume Q of the anemostat type blower outlet input in the step 10 to a predetermined ratio, and the vertical blower outlets 13, 14 of the simulation blower outlets 11, 14. 16 and the horizontal air outlets 12 and 15 are set respectively.

  Specifically, the blowout air volume setting unit 8 blows out the airflow of 3/5 to 2/3 of the total blown airflow Q of the anemostat type air outlet from the vertical air outlets 13 and 16 of the simulation air outlets 11 and 14. The air volume Qp is set, and the remaining air volume is set to the blown air volume Qn of the horizontal outlets 12 and 15.

  In the next step 40, the blown air speed setting unit 9 sets the square number of the neck diameter L input in the step 10 as the neck area, and the blown air amount of the vertical air outlets 13 and 16 of the simulation air outlets 11 and 14. By dividing Qp by the neck area, the blown air velocity Vp of the vertical air outlets 13 and 16 is set, and the air flow rate Qn in the normal direction of the horizontal air outlet 15 of the simulation air outlets 11 and 14 is divided by the neck area. By doing this, the blowing wind speed Vn in the normal direction of the horizontal outlets 12 and 15 is set.

  In the next step 50, the blown air flow analysis unit 10 sets the blown air volume Qp of the vertical blowout ports 13 and 16 of the simulation blowout ports 11 and 14 and the blown airflow of the horizontal blowers 12 and 15 set by the blown air amount setting unit 8. The numerical value is based on Qn and the blown air velocity Vp of the vertical air outlets 13 and 16 of the simulation air outlets 11 and 14 set by the blown air velocity setting unit 9 and the blown air velocity Vn of the horizontal air outlets 12 and 15 in the normal direction. Fluid flow analysis (CFD) is performed to analyze the air flow distribution from the anemostat type air outlet.

  FIG. 23 shows a round anemostat type air outlet, the neck wind speed of 3.0 m / s, and the air quantity of 2/3 of the total air quantity Q of the anemostat type air outlet of the vertical air outlet 13 of the simulation air outlet 11. The blown air volume Qp is set, the remaining air volume is set to the blown air volume Qn of the horizontal air outlet 12, and the neck diameter (anemo size) is 12.5 cm (# 12.5), 20 cm (# 20), 30 cm ( # 30), 40cm (# 40), and 60cm (# 60), when the remaining wind speed is 0.50m / s in the vertical direction and when the remaining wind speed is 0.25m / s in the vertical direction It is a figure which shows the measurement result of distance, respectively. From this figure, it can be seen that the simulation result by the blowout air flow distribution simulation method according to the present embodiment substantially matches the catalog value of the outlet manufacturer. Therefore, according to the blowing air flow distribution simulation method according to the present embodiment, the actual air flow distribution can be easily reproduced.

  As described above, according to the blowout air flow simulation method according to the embodiment of the present invention, the dimensions of the simulation blowout ports 11 and 14 are determined by formulating the neck diameter of the anemostat type blowout port as a variable. There is no need to conduct experiments when determining the dimensions of the simulation outlets 11 and 14. Further, the blown air speeds Vp, Vn, and Vt from the horizontal air outlets 12 and 15 of the simulation air outlets 11 and 14 and the vertical air outlets 13 and 16 are expressed by using the total air flow Q of the anemostat type air outlet as a variable. Therefore, it is not necessary to perform an experiment when determining the blown wind speeds Vp, Vn, and Vt. Therefore, man-hours can be reduced in simulation and input work, the time until obtaining the simulation result can be shortened, and occurrence of human error such as an input error can be prevented. Further, since the blown air flow diffuses concentrically in the cooling mode, the actual air flow distribution can be easily reproduced.

It is a block diagram which shows the structure of the hardware of the computer system used in order to implement the blowing air flow distribution simulation method which concerns on embodiment of this invention. It is a functional block diagram which shows the structure of the software of the blowing air flow distribution simulation system which performs the blowing air flow distribution simulation method which concerns on embodiment of this invention. It is a flowchart which shows the flow of the blowing air flow distribution simulation method which concerns on this Embodiment. It is a top view which shows the blowout for simulation of the round type anemostat type blower outlet used in the blowout air flow distribution simulation method which concerns on this Embodiment. It is a front view which shows the blowout for simulation of the round type anemostat type blower outlet used in the blowout air flow distribution simulation method which concerns on this Embodiment. It is a top view which shows the blowout port for simulation of the round type anemostat type blower port used at the time of the air_conditioning | cooling mode in the blown air flow distribution simulation method which concerns on this Embodiment. It is a front view which shows the blowout port for simulation of the round type anemostat type blower port used at the time of the air_conditioning | cooling mode in the blown air flow distribution simulation method which concerns on this Embodiment. It is a top view which shows the simulation blower outlet of the square type anemostat type blower outlet used in the blowout air flow distribution simulation method which concerns on this Embodiment. It is a front view which shows the simulation blower outlet of the square anemostat type blower outlet used in the blowout air flow distribution simulation method which concerns on this Embodiment. It is a top view which shows the simulation blower outlet of the square type anemostat type blower outlet used in the blowout air flow distribution simulation method which concerns on this Embodiment. It is a front view which shows the simulation blower outlet of the square anemostat type blower outlet used in the blowout air flow distribution simulation method which concerns on this Embodiment. The figure which shows the simulation result of the blowing air flow distribution in the blowing air flow distribution simulation method which concerns on this Embodiment when the blowing air speed of the tangential direction of a horizontal air outlet is set to 0% of the air blowing speed of the normal direction of a horizontal air outlet. It is. The figure which shows the simulation result of the blowing air flow distribution in the blowing air flow distribution simulation method which concerns on this Embodiment when the blowing air speed of the tangential direction of a horizontal air outlet is set to 20% of the blowing air speed of the normal direction of a horizontal air outlet. It is. The figure which shows the simulation result of the blowing air flow distribution in the blowing air flow distribution simulation method which concerns on this Embodiment when the blowing air speed of the tangential direction of a horizontal air outlet is set to 30% of the air blowing speed of the normal direction of a horizontal air outlet. It is. The figure which shows the simulation result of the blowing air flow distribution in the blowing air flow distribution simulation method which concerns on this Embodiment when the blowing air speed of the tangential direction of a horizontal air outlet is set to 40% of the blowing air speed of the normal direction of a horizontal air outlet. It is. The figure which shows the simulation result of the blowing air flow distribution when the blowing air speed of the tangential direction of a horizontal blower outlet is set to 60% of the blowing wind speed of the normal direction of a horizontal blower outlet in the blowing air flow distribution simulation method which concerns on this Embodiment. It is. The figure which shows the simulation result of the blowing air flow distribution in the blowing air flow distribution simulation method which concerns on this Embodiment when the blowing air speed of the tangential direction of a horizontal air outlet is set to 100% of the blowing air speed of the normal direction of a horizontal air outlet. It is. In the blowout air flow distribution simulation method according to the present embodiment, the neck diameter (anemo size) is 12.5 cm (# 12.5), 20 cm (# 20), 30 cm (# 30), 40 cm (# 40), 60 cm ( It is a figure which shows the measurement result of the horizontal diffusion radius at the time of the residual wind speed of 0.50 m / s and the horizontal diffusion radius at the time of the residual wind speed of 0.25 m / s when changing to # 60). It is a top view which shows the blowout port for simulation of the round type anemostat type blower port used at the time of heating mode in the blowing air flow distribution simulation method which concerns on this Embodiment. It is a front view which shows the blowout for simulation of the round type anemostat type blower outlet used at the time of heating mode in the blowout air flow distribution simulation method which concerns on this Embodiment. It is a top view which shows the blower for simulation of the square type anemostat type blower outlet used at the time of heating mode in the blown air flow distribution simulation method which concerns on this Embodiment. It is a front view which shows the blower for simulation of the square-shaped anemostat type blower used in the blowing airflow distribution simulation method which concerns on this Embodiment at the time of heating mode. In the blowout air flow distribution simulation method according to the present embodiment, the neck diameter (anemo size) is 12.5 cm (# 12.5), 20 cm (# 20), 30 cm (# 30), 40 cm (# 40), 60 cm ( It is a figure which shows the measurement result of the arrival distance of the perpendicular direction at the time of the residual wind speed of 0.50 m / s and the arrival distance of the vertical direction at the time of the residual wind speed of 0.25 m / s when changing with # 60).

Explanation of symbols

11,14 Simulation outlet 12,15 Horizontal outlet 13,16 Vertical outlet

Claims (5)

A method for simulating a blown air flow distribution in an orthogonal grid system for predicting a blown air flow distribution from an anemostat type blower outlet by numerical fluid analysis,
When the anemostat type outlet is round, it is divided into four grids, and two horizontal outlets and one vertical outlet are set for each of the four grids. When the anemostat type outlet is square, it is divided into nine grids, and the four corner grids out of the eight grids excluding the central part are each two horizontal outlets and 1 Set up one vertical air outlet and set one horizontal air outlet and one vertical air outlet for each of the four lattices other than the four corners of the eight lattices to constitute a simulation air outlet A simulation outlet setting step,
A blowout air volume setting step that sets the blowout airflow of the vertical blowout and the horizontal blowout of the simulation blowout by dividing the total blown wind of the anemostat type blowout into a predetermined ratio, and
A neck area is set from the neck diameter of the anemostat-type outlet, and the outlet air volume of the vertical outlet and the outlet air volume of the horizontal outlet set in the outlet air volume setting step are respectively the neck area. A blowing air speed setting step for setting the blowing air speed of the vertical air outlet and the horizontal air outlet of the simulation air outlet,
The blowout air volume of the vertical air outlet and the horizontal air outlet of the simulation air outlet set in the blow air volume setting step, and the blowout of the vertical air outlet of the simulation air outlet set in the blow air speed setting step A blown air flow analysis step for analyzing a blown air flow distribution from the anemostat type blower outlet based on the wind speed and the blown wind speed of the horizontal blower outlet,
A blowing air flow distribution simulation method characterized by comprising: In cooling mode,
The blowing air volume setting step sets an air volume of 4/11 to 5/11 of the total blowing air volume of the anemostat type air outlet as the air volume of the vertical air outlet of the simulation air outlet, and sets the remaining air volume to the horizontal air volume. Set the blowout air volume at the outlet,
The blowing air speed setting step sets the square number of the neck diameter to a neck area, and divides the blowing air volume of the vertical air outlet of the simulation air outlet set in the blowing air volume setting step by the neck area. Set the blown air speed of the vertical blower outlet, and set the blown air speed of the horizontal blower outlet by dividing the blown air quantity of the horizontal blower outlet of the simulation blower outlet set in the blown air volume setting step by the neck area The blowout air flow distribution simulation method according to claim 1. When the anemostat type outlet is round and in cooling mode,
The blowing air volume setting step sets an air volume of 4/11 to 5/11 of the total blowing air volume of the anemostat type air outlet as the air volume of the vertical air outlet of the simulation air outlet, and sets the remaining air volume to the horizontal air volume. Set the blowout air volume at the outlet,
The blowing air speed setting step sets the square number of the neck diameter to a neck area, and divides the blowing air volume of the vertical air outlet of the simulation air outlet set in the blowing air volume setting step by the neck area. By setting the blown air speed of the vertical blower outlet and dividing the blown air quantity of the horizontal blower outlet of the simulation blower outlet set in the blown air quantity setting step by the neck area, the normal direction of the horizontal blower outlet is set. Setting the blowing air speed, setting the blowing air speed in the tangential direction of the horizontal air outlet by multiplying the air blowing speed in the normal direction of the horizontal air outlet by any value in the range of 0.2 to 0.3,
The blowout air flow analysis step includes the blowout airflow rate at the vertical blowout port and the horizontal airflow rate set at the blowout air amount setting step, and the simulation airflow set at the blown air velocity setting step. The distribution of the blown air flow from the anemostat type blower outlet is analyzed on the basis of the blowout wind speed at the vertical blowout outlet, the blowout wind speed in the normal direction of the horizontal blowout outlet, and the tangential blowout wind speed of the horizontal blowout outlet. The blowout air flow distribution simulation method described. In heating mode,
In the blowing air volume setting step, the air volume of 3/5 to 2/3 of the total air volume of the anemostat-type air outlet is set as the air volume of the vertical air outlet of the simulation air outlet, and the remaining air volume is set as the horizontal air volume. Set the blowout air volume at the outlet,
The blowing air speed setting step sets the square number of the neck diameter to a neck area, and divides the blowing air volume of the vertical air outlet of the simulation air outlet set in the blowing air volume setting step by the neck area. Set the blown air speed of the vertical blower outlet, and set the blown air speed of the horizontal blower outlet by dividing the blown air quantity of the horizontal blower outlet of the simulation blower outlet set in the blown air volume setting step by the neck area The blowout air flow distribution simulation method according to claim 1.   A blown air flow distribution simulation program for causing a computer to execute the blown air flow distribution simulation method according to any one of claims 1 to 4.

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