Why doesn't coarsening occur during grid adapting?
I am running a complicated geometry with turbulence and trying to adapt my grid so that wall Y+ will fall into an acceptable range. To do this, I am using the Adapt menu feature to adapt by Wall Y+.
When I click Mark, the feature shows me that 0 cells need refinement and that a lot of cells need coarsening. When I click Adapt, however, nothing happens-- the same grid wrong grid is given as the output (0 change in cells, faces, etc).
I am working in a 3D geometry with tetrahedral cells (T Grid). I think that Fluent will only let me refine and not coarsen-- why is this?
Thanks in advance, AS
Re: Why doesn't coarsening occur during grid adapt
Hi, I think that coarsening only ocurrs with conformal adaption. Make sure that you have enabled that option in "Controls" menu. And also, I think that if the node/s you want to coarse is on a boundary Fluent won´t adapt it.
Hope this help!
It is true that refined mesh on boundary can not coarsen?
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