[filippo222]

Hi everybody,
I'm running a simulation with pimpleDyMFoam and turbulence model kEpsilon, after just a few iterations deltaT drops to very low values (order of e-20) and a very high y+ value (order of e18). I cannot understand if the problem are the mesh and BC or the set up of schemes, solution and controlDict. Here attached fvSchemes, fvSolution and controlDict.
Thanks in advance.

[rapoutin]

In your controlDict you have adjustTimeStep yes;
And maxCo 1;
So deltaT will drop until it reaches the constraint maxCo < 1

At the moment you could change adjustTimeStep to no.

We don't have enough info to help you more. You could run some iteration and have a check on paraview to see where the problem is located. You are looking for high-velocity cells.

[filippo222]

Problem solved, the main issue was inconsistency between mesh and turbulence model adopted, thank you anyway

[chandrana70]

Originally Posted by filippo222

Problem solved, the main issue was inconsistency between mesh and turbulence model adopted, thank you anyway

How do you know that the problem was inconsistency between mesh and turbulence? I have same the problem when I use pimpleFoam as solver for simulation of underwater vessel