{"id":462717,"date":"2026-08-18T17:33:05","date_gmt":"2026-08-18T17:33:05","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/set-correctly-a-muti-level-adaptive-refinement-method\/"},"modified":"2026-08-19T08:57:53","modified_gmt":"2026-08-19T08:57:53","slug":"set-correctly-a-muti-level-adaptive-refinement-method","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/set-correctly-a-muti-level-adaptive-refinement-method\/","title":{"rendered":"Set correctly a muti-level adaptive refinement method"},"content":{"rendered":"<p>Dear support,<\/p>\n<p>I am practicing with the adaptive mesh refinement over a simple 2D cylinder configuration. I would like to set the following refinement layers:<\/p>\n<ul>\n<li>lvl 0 refinement for cells with vorticity-mag&lt; 0.1<\/li>\n<li>lvl 1 refinement for cells with 0.1&lt;=vorticity-mag &lt; 0.25<\/li>\n<li>lvl 2 refinement for cells with 0.25&lt;=vorticity-mag &lt; 2.0<\/li>\n<li>lvl 3 refinement for cells with 2.0&lt;=vorticity-mag<\/li>\n<\/ul>\n<p>I have created for this reasons 6 cell registers<\/p>\n<ul>\n<li>lvl_1_ref that marks the cells for refinement where vorticity-mag &gt; 0.1<\/li>\n<li>lvl_1_coa that marks the cells for coarseing where vorticity-mag &lt; 0.09<\/li>\n<li>lvl_2_ref that marks the cells for refinement where vorticity-mag &gt; 0.25<\/li>\n<li>lvl_2_coa that marks the cells for coarseing where vorticity-mag &lt; 0.24<\/li>\n<li>lvl_3_ref that marks the cells for refinement where vorticity-mag &gt; 2.0<\/li>\n<li>lvl_3_coa that marks the cells for coarseing where vorticity-mag &lt; 1.95<\/li>\n<\/ul>\n<p>So if we start from a base grid, regions where vorticity-mag &gt; 2.0 will be afected by lvl_1_ref, lvl_2_ref and lvl_3_ref and therefore a grid refinement level 3 is achived. For regions where vorticity-mag &gt; 0.1, only lvl_1_ref will be applied and a grid refinement level 1 is achieved.<\/p>\n<p>However I see than only with the lvl_1_ref and lvl_1_coa refinement and coarsening criterias, the levels 3 of grid refinement are achieved. Is there any better way to apply each cell refinement level to a specific value of vorticity?<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-462717","topic","type-topic","status-publish","hentry","topic-tag-adaptivemesh-2","topic-tag-adapt-2","topic-tag-adaptive-mesh-method","topic-tag-adaptive-meshing"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Dear support, I am practicing with the adaptive mesh refinement over a simple 2D cylinder configuration. 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