p == p_rgh + rho*gh vs. p = p_rgh + rho*gh
 

In interPhaseChangeFoam, in the pEqn.H, there is a script, p == p_rgh + rho*gh

What is the difference between p == p_rgh + rho*gh and p = p_rgh + rho*gh;?

Marupio gives a really good explanation in: https://www.cfd-online.com/Forums/op...e-between.html

(PS. you would have found this from a quick google on "difference between = and ==")

Thanks, Tobermory.
This is very helpful!