hello, I want to simulate a vehicle in fluent , I have the cad model of my car with it's actual dimensions. generating the vehicle mesh is very Time-consuming for my computer system , so can I scale my model in smaller dimensions and then achieve true results as well as actual dimensions ?
I am not sure if scaling the mesh will reduce the strain on your computer. The number of cells in your mesh will still be the same. You can reduce the mesh density, but this will likely effect your results. You could run a mesh independence study to determine what mesh density is needed for accurate results.
I am not sure if scaling the mesh will reduce the strain on your computer. The number of cells in your mesh will still be the same. You can reduce the mesh density, but this will likely effect your results. You could run a mesh independence study to determine what mesh density is needed for accurate results.
Dear Shayan,
You can scale your model but you have to recalcuate all the non-dimensional parameters as Reynolds number and Mach number which is a consequence of scaling the wind speed as well. Taking into account that your results must be grid independent (As Maxwell said you have to perform Mesh Study). I do not know if you are aware about mesh growth rate or not which might decrease the total number of cells as you do not need so many/small cells at the far field but only around the geometry you are solving.
Best regards
Mohamed
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