[hosein72]

Hi.
A. I run a simulation on fluent. I have a problem. I find mass flow rate on inlet from 2 ways:
1. from Report>fluxes>mass flow rate
2. from axial velocity contour, with velocity and area (density is constant), I can compute mass flow rate nearly.
from 2 way, mass flow rates are very different. Are contours are correct or report?
I have another questions:
B. If a simulation run for a long time, how can I understand that it will be converge or never converge?!
C. I want to fix mass flow rate in input and output. what kind of boundary conditions is appropriate if the fluid is ideal gas and compressible.
thank you