Specifying fluid density
I am new to OpenFoam. I am trying to solve a steady-state, turbulent flow case with water as the fluid. Although I can change the fluid viscosity in the transportProperties file, there is no option for changing the fluid density. As the transportProperties file and the simpleFoam case was developed for air, I suspect my results are wrong as I did not change the fluid density. How do I change the fluid density from the default value?
Thanks in advance,
OpenFOAM solvers just use the kinematic viscosity instead of dividing the dynamic viscosity by the fluid density. This saves a few operations and should thus improve the efficiency.
and in compressible solvers?
- In incompressible solvers the pressure solution is to be multiplied by density (constant) in order to give you the real forces on the body.
-does libforces.so give you the real forces without multiplying the pressur e field?
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