DelT decrease fast by using interFoam
 

Hello everyone,

I hope someone here can provide some guidances for a simulation that I am trying to run. I am trying to simulate free surface around a Wigley hull form by using interFoam. In the tutorial, there is a sample case for this hull form with the computational domain using the box grid. Now, I change the grid topology to O-O type as shown in the attached Figure (My grid is fine by using checkMesh tool of openfoam - file Mesh.txt).

The boundary conditions and setting file of fvSchemes and fvSolutions are keep the same with the tutorials cases. Setting up for the boundary condition and system are as in the attached file.

I tried to run to simulate my case. However, delT in my simulation decrease much and fast. From deltaT = 0.000117647 at the first step to deltaT=1.61412e-13 at Time = 0.001054993463.
Therefore, I could not finish my computation.

I would be very appreciative if someone could show me in the right direction to get this model.

Regards,
Trong