[osimonsimon]

Hi, this problem bothered me for a while and I really couldn't find a way to figure it out. Basically I am running a 3D simulation using simpleFoam. The model is like a room with multiply inlets (nine) and oulets (two). All of them are velocity inlets(outlets), i.e. the velocity is known at all these boundaries. I followed the tutorial to calculate the initial k and Epsilon at time "0" for all the boundaries. And also set the value for the internal field by guessing a number within the range (between min and max of k(or Epsilon)). I found that the convergence is GREATLY depended on the initial guess of k and Epsilon for the internalField and very sensitive to them. The flow field is also stongly depended on the initial guess of k and epsilon. I've tried a lot of combinations and still have problems getting expected convergence.

Does anyone have any suggestions to this kind of problem? This problem holds me up for quite a while and it is killing me... Please help! Thank you a bunch!