CFDST 
December 11, 2012 03:46 
Cinema hall simulation
Hello,
I made a model of a hall in Gambit, meshed it after 1000000 tries, load it into Fluent and start to make a simulation. The project is at the University and it is a ventilation system of a cinema hall. My velocity inlets are at the top,lower top and the front wall,my outlets(outflows) are at the stairs.Velocity of the inlets 2 m/s, 2.3 m/s and 1.4 m/s. My professor told me that I have to get solution converged after about 400 iterations or 600 may be. I made 2100 iterations and I still cannot get solution converged. I set Ke viscous method with RNG. Flow,turbulence and energy equations, the discretization of momentum,turbulence kinetic energy,energy,dissipation rate and energy are second order upwind. I cannot figure out where is the problem, may be :
1.More iterations need
2.I change the steps of the pathlines and it shows a lot more pathlines.
3.I made a sweep surface at the stairs z=2.13 and the velocity is still low.
Thank you in advance for your help.
