{"id":397662,"date":"2024-12-16T18:25:28","date_gmt":"2024-12-16T18:25:28","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/the-meshing-algorithm-cannot-find-matching-topology-2\/"},"modified":"2024-12-16T18:25:28","modified_gmt":"2024-12-16T18:25:28","slug":"the-meshing-algorithm-cannot-find-matching-topology-2","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/the-meshing-algorithm-cannot-find-matching-topology-2\/","title":{"rendered":"The meshing algorithm cannot find matching topology"},"content":{"rendered":"<p>&lt;p&gt;Hello, I am trying to setup a linear periodic B.C. in Mechanical. I am getting the following error message: &#8220;The meshing algorithm cannot find matching topology. Please verify the topology and the position as well as the orientation of any associated coordinate systems.&#8221;&lt;\/p&gt;&lt;p&gt;The mesh builds successfully, but when solving, it says the mesh file is corrupted. Based on previous threads, I have checked the area and number of nodes for the high and low sides of the geometry. Both are exactly equal. See attached images. This geometry should repeat in the y direction to infinity. I also have a swept mesh in the z direction. Could that be an issue? Is there another reason for this error? Help appreciated!&lt;\/p&gt;&lt;p&gt;Kevin&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/16-12-2024-1734373382-mesh.png\" alt=\"\" width=\"728\" height=\"395\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/16-12-2024-1734373415-nodes high.png\" alt=\"\" width=\"730\" height=\"442\" \/>&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/16-12-2024-1734373435-nodes low.png\" alt=\"\" width=\"717\" height=\"429\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/16-12-2024-1734373450-high.png\" alt=\"\" width=\"680\" height=\"368\" \/>&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/16-12-2024-1734373473-low.png\" alt=\"\" width=\"671\" height=\"356\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-397662","topic","type-topic","status-publish","hentry","topic-tag-ansys-mechanical","topic-tag-mesh","topic-tag-periodic-bc-1"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello, I am trying to setup a linear periodic B.C. in Mechanical. 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