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Simulation of a louver in Ansys Fluent

Louvers are used today in some parts of the Middle East. You can gain a lot of usages from louvers. One of them is cooling the building in the summer. These louvers use an air inlet above a building that stretches out the wind and leads it through the building, as a result, the air flows downward.

Another type of louver uses the temperature differential and natural convection phenomenon to send the airflow upward. These applications can be used in none energy consumption buildings for ventilation. By combining these modern methods, one can also design systems that do not harm the environment or damage the cemetery. Fluid simulation of louver is an economical way to check their performance in different climatic conditions before making them.

In this project, louver simulation, air conditioning and cooling system of Dolat Abad mansion have been modeled. This simulation was performed with Ansys Fluent software.

Geometry and Mesh

The geometry required for this analysis, which includes the body of the building and the winding section of the building, is designed in Gambit software. Meshing required for this analysis has been done in Ansys Meshing software. The mesh type used in this analysis is unstructured. The total number of cells produced for this geometry is 30,4266.

Model

Due to the fact that the structure is exposed to external wind flow and the wind velocity is somewhat high, the K-epsilone RNG model is used to analyze the flow turbulency. The Standard Wall Function is used for the wall proximity.

Boundary Condition

The flow inlet in this analysis is defined as Velocity-Inlet. Velocity of airflow at the inlet is 12 m/s. Pressure-Outlet has been used for output flow.

Discretization of equations

Due to the type of heat transfer in this analysis, the Pressure-Based solver is used as a permanent solution for solving the equations. SIMPLE algorithm is used to discretize the coupled equations of velocity and pressure. The momentum equations have been discretized as Second Order Upwind.

Finally, the results are shown as contours of streamlines, pressure on surfaces, velocity vectors on surfaces, and fluid velocity.

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