Pressure Correction Method for Cylindrical Coordinates
Hello every body, I am facing a trouble with the pressure correction method in a simple flow in pipe problem. When I use very low values for density (1 kg/m3), the code converges. While when using heavy densities (1000 kg/m3) the program diverges. Please I need your help in this annoying trouble.
:confused: |
Hello,
What kind of help do you need ? Do you have a specific question ? What solver do you use ? RenardP |
Pressure Correction Method for Cylindrical Coordinates
Hello, let's start:
Thanks so much. Eslam Reda. |
OK,
the SIMPLE algorithm is a classical one so I think you have implemented a correct version. In your place I would check the grid and the implementation of the boundary conditions. Usually a divergent solution is caused by bad implementation of the boundary conditions. Also if you can find an analytical solution for a simplified version of your tube problem you can test various parts of your implementation (e.g a Poiseuille flow in a duct). Paul |
Hello again,
Surely I checked the code for a simple Poiseuielle flow problem. The program diverges at high densities but gives the expected analytical results for low densities. I wish to get the data, Dx, Dy, under-relaxation factor and Dt, for a solved water flow in a pipe problem. |
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