AcuSolve Multiphase simulation
Hi there!
I am trying to simulate a flow of humid air running through an helical pipe. As the air flows, it gets cooled from a negative heat flux on the walls of the pipe.
Any thoughts on how can I approach this problem? Currently, I am not able to run the simulation because I get an error 'Negative absolute pressure for humid air'.
hi!
I am trying to simulate the dehumidification of the air passing through the pipe. Right now I am trying to impose a low temperature on the walls that should easily condensate the water.
Altair EmployeeI changed the pressure offset and then switched the fluid to laminar instead of turbulent. Now it seems that it works.
My reasons to use a moving mesh is because I would like to simulate the centrifugal force that comes from the fluid passing through the helical tube.
I am adding the .inp file and the .log, let me know if my approach is wrong.. thanks!
Why are you using the pressure offset in the first case? I would remove it, unless you know why you introducing it. Also the current value of 10135 seems really odd (assuming you meant it 101325 = 1bar?).
Keep turbulence (default SA model) on, as that generally helps with convergence.
Mesh motion is needed when there is some explicit movement of a part (say FSI or rotating fan or flexible body). In your case I do not see a reason to enable mesh motion.
Which physics phenomena are you trying to capture with the simulation? Can you add the .inp file and .Log file?