My simulation doesn't converge

[GuillaumeP]

I have problems getting my MicroFlo model converging. I have tried many times with different simulation parameters and turbulence model, but the same problems remain : residuals are very high ( between 1 and 10% of initial value), and the resulsts I get seem not be physical. Here is a short description of my model

-external analysis
-walls have been put by defaults in ModelIT
-it's about 600*400*80 meters ...
-there are a corridor between buildings oriented North
-wind comes approximately from North (with an angle of 10°)
-windspeed input is 5 m/s


I don't understant what's the problem ! I have rise the number of iteration, but the residuals are quitte stable (but too big!!)

Could anybody help ? Please !

Best whises

[dnilesh01]

Hi,

I think for converging the all parameters you need to reduce your false time step or you can reduce grid size.