I am running a heat transfer problem and trying to implement the ideal gas equation to model my density. I am using rke two layer model for turbulence. When I use constant density or even incompressible ideal gas, the solution converges nicely in less than 2000 iterations. However, as soon as the ideal gas is chosen, the solution limits the pressure (regardless of what range of pressure values I use). Has anyone else experienced a similar problem?

Hi; For compressible calculations, it is better to choose "Coupled" solver not "Segregated". Then you should start calculations with a very low courant number in solution panel (for example .001). After several iterations, you can increase courant number to 0.5 or ..., slowly(.001 then .005 then .01 and ...). Hope this help you. ROOZBEH

hi have you selected energy equation to solve nabeel

yes, I am using the energy equation