'Swollen' boundary layer
Hello everyone,
I am trying to do mesh study for flow over cylinder. The y+ range for BL was set at 41, Log Law region (30<y+<300).
So, I want to study the effect of cylinder's edge size towards the accuracy of drag and lift force. When I reduce the cylinder's edge mesh size (edge refinement), the BL look swollen (LOL) as shown in figure below.
Attached is my .hmcfd file for your reference.
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Added a small box refinement to get the size smaller at that point.
Not sure why the edge/surface mesh is bigger at that location.
Added a small box refinement to get the size smaller at that point.
Not sure why the edge/surface mesh is bigger at that location.