{"id":393666,"date":"2024-11-11T22:50:21","date_gmt":"2024-11-11T22:50:21","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-meshing-curvature-size-function-providing-unexpected-results\/"},"modified":"2024-11-11T22:50:21","modified_gmt":"2024-11-11T22:50:21","slug":"fluent-meshing-curvature-size-function-providing-unexpected-results","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-meshing-curvature-size-function-providing-unexpected-results\/","title":{"rendered":"Fluent meshing curvature size function providing unexpected results"},"content":{"rendered":"<p>&lt;p&gt;Hello, I&#8217;m attempting to mesh this donut shaped geometry such that the filleted shoulders have a finer resolution than the cylindrical surfaces and the flat sides, see the images below.&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/11-11-2024-1731365337-mceclip2.png\" width=\"606\" height=\"489\" \/>&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/11-11-2024-1731364771-mceclip0.png\" width=\"611\" height=\"454\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;I had hoped to achieve this with a curvature size function with a 0.5mm min, 10mm max, and 10 deg normal angle. Such that the cylindrical and flat faces end up towards that 10mm size while the filleted shoulders should end up towards the lower end of that range (~2-3mm). Instead the mesh that is generated looks like below. The green region I&#8217;ve circled looks roughly as I&#8217;d hope, however, most of the mesh looks like the red zone, with a uniform cell size at the minimum constrained size.&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/11-11-2024-1731364813-mceclip1.png\" width=\"659\" height=\"432\" \/>&lt;\/p&gt;&lt;p&gt;This has been a persistent issue over Ansys versions and different methodologies (scoped sizing vs size functions, remesh individually vs reimport with cfd surface mesh). I have tried different growth rates and ensured that the global mesh settings are not conflicting with the curvature settings.&lt;\/p&gt;&lt;p&gt;While in this case, I can resolve the issue by creating separate size functions for each face, there are other geometries where I believe a similar issue has occurred, so I&#8217;m hoping to understand what has gone wrong.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-393666","topic","type-topic","status-publish","hentry","topic-tag-fluent-mesh"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello, I&#039;m attempting to mesh this donut shaped geometry such that the filleted shoulders have a finer resolution than the cylindrical surfaces and the flat sides, see the images below. I had hoped to achieve this with a curvature size function with a 0.5mm min, 10mm max, and 10 deg normal angle. 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