[k.kshitij]

Hi,

I am trying to mesh a 50 M ship running at high speeds going upto 33 knots.
The issue is that to get the Yplus between 30-300 for KWSST model. The mesh size would go above 25 mill cells with snappyHexMesh which is not feasible for me to run on my machines. I am using the same meshing tactic employed in the DTC Hull tutorial with toposetDict based refinement.
I am doing a steady state analysis using LTSInterfoam.

Is there a way where I can reduce the mesh size drastically to about 8-10 mill and still keep my yplus in required range?

Is there any wall function that handles larger Yplus values?

[jherb]

Have you tried to keep the resolution in the direction normal to the wall but decrease it tangential to it (aka reduce the number of points)? Large aspect ratios seem not to be such a big problem.

[CFD2016]

Originally Posted by k.kshitij

Hi,

I am trying to mesh a 50 M ship running at high speeds going upto 33 knots.
The issue is that to get the Yplus between 30-300 for KWSST model. The mesh size would go above 25 mill cells with snappyHexMesh which is not feasible for me to run on my machines. I am using the same meshing tactic employed in the DTC Hull tutorial with toposetDict based refinement.
I am doing a steady state analysis using LTSInterfoam.

Is there a way where I can reduce the mesh size drastically to about 8-10 mill and still keep my yplus in required range?

Is there any wall function that handles larger Yplus values?

Hi, seems the problem goes far way. But I am facing this problem. I will be very happy if I heard that you could sovel this issue. Did you?