Karthik R
Hello,nIn certain simulations (involving ideal gas law or incompressible ideal gas or Boussinesq approximation), you would need to define parameters like operating pressure and temperature (or density). Depending on the problem you are modeling, these parameters are used in the simulations. Here is an explanation from the Fluent Users Guide that might be of interest to you.n8.14.1. The Significance of Operating Pressure:n47.6.4 Operating Conditions Dialog Box:nYou might want to go through these links to understand how these are used in the model.nKarthikn