Solar Chimney Power Plants, CFD Validation by ANSYS Fluent
In this project, we intend to simulate the solar chimney power plants to compare and validate the results with the results in the article.
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Solar Chimney Project Description
In this project, We simulated the model by Ansys Fluent software, and then we compare the results with the results extracted from an article called this “Effects of geometric parameters on the performance of the solar chimney power plants”.
First, the geometry of the test chamber in SolidWorks software is designed and the design modeler is prepared to create the mesh.
|Duct Height||Duct Diameter||Collector Height||
The meshing of this present model has been generated by ICEM CFD software. The mesh grid is fully structured with high element quality.
To check the independence of the mesh and eliminate the error of the number of elements, it is necessary to lower the mesh so that our results are no longer affected by the number of grid elements. For this purpose, we first start with the element number 25000, and by doubling the number of elements, we examine the output speed of the pipe as a measure of independence from the mesh has taken.
Solar Chimney CFD Simulation
To simulate the present model, several assumptions are considered, which are:
- The solver is pressure-based.
- Simulation has been done as steady State
- The effect of gravity on the flow is considered to be -9.81 m.s-2.
The following is a summary of the steps for defining the problem and its solution.
|Collector wall flux||600-800 w/m^2|
|gradient||Least squares cell-based|
|turbulent kinetic energy||second-order upwind|
|specific dissipation rate||second-order upwind|
|gauge pressure||0 Pascal|
By comparing the simulation results with the results in the article, which have an error of less than 5%, it can be concluded that the simulation has been validated with the article.