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Wind Catcher CFD Simulation

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The Wind Catcher is basically based on the fact that wind is used to draw air into the building and its force response, suction, is used to drive warm and polluted air out.

This product includes a CFD simulation files and a training movie using ANSYS Fluent software.

There are some free products to check the service quality.


Introduction of Wind Catcher and its working mechanism

The Wind Catcher is used to draw air into the building by suction, to drive warm and polluted air out. The internal structure is such that air enters and stuck between the walls. As a result, air moves downward from its outlet valves to the building environment.

Wind Catcher CFD Simulation Steps

The present study examines the air flow inside a wind catcher. Its structure has an air intake located above the tower building; the air is trapped in the upper part and is therefore driven downstream into the main building by the lower outlets.

The solver is STEADY STATE and PRESSURE_BASED. Also, the gravity force is ignored.

The present 3-D model is designed using SOLIDWORKS software. The lower part is an octagonal shape with a high tower. The ambient air flow enters from the upper part and then flows downward through the outlet pores.

Unstructured mesh of this model was performed using ANSYS Meshing software. The element number is equal to 321017.

Here is a summary of the steps to define and solve the problem:

wind Catcher CFD Simulation Models
k-epsilon Viscous model
RNG k-epsilon model
Standard wall function Near wall treatment
Boundry conditions
Velocity inlet Inlet type
12 m.s-1 velocity
Pressure outlet Outlet type
0 Pa gauge pressure
wall Walls type
stationary wall all walls
Solution Methods for wind catcher CFD Simulation
Simple   Pressure-velocity coupling
Second order upwind pressure Spatial discretization
Second order upwind momentum
first order upwind turbulent kinetic energy
first order upwind turbulent dissipation rate
Standard Initialization method
0 m.s-1 velocity (x,y,z)

After the solution process, three-dimensional and two-dimensional contours of pressure and velocity, path lines and velocity vectors are obtained.


All files, including Geometry, Mesh, Case & Data, are available in Simulation File. By the way, Training File presents how to solve the problem and extract all desired results.



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