{"id":436077,"date":"2025-07-04T09:37:42","date_gmt":"2025-07-04T09:37:42","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-in-geometry-fluent\/"},"modified":"2025-09-09T10:59:49","modified_gmt":"2025-09-09T10:59:49","slug":"error-in-geometry-fluent","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-in-geometry-fluent\/","title":{"rendered":"Error in geometry Fluent"},"content":{"rendered":"<p>&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/07\/04-07-2025-1751621502-imagem_2025-07-04_063142315.png\" alt=\"\" width=\"1356\" height=\"658\" \/>&lt;\/p&gt;&lt;p&gt;&lt;span class=&#8221;ryNqvb&#8221;&gt;Hello, I&#8217;m a beginner in CFD and I want to do an axisymmetric simulation of a diffuser.&lt;\/span&gt; &lt;span class=&#8221;ryNqvb&#8221;&gt;I have 2 sketches, one is my control area where the fluid passes, in this case water, and the second sketch is a line that represents my diffuser.&lt;\/span&gt; &lt;span class=&#8221;ryNqvb&#8221;&gt;I generate the surface from my first sketch and a line from my second sketch.&lt;\/span&gt; &lt;span class=&#8221;ryNqvb&#8221;&gt;When I try to subtract one from the other, Ansys doesn&#8217;t accept it, I believe because I&#8217;m trying to subtract a line from an area.&lt;\/span&gt; &lt;span class=&#8221;ryNqvb&#8221;&gt;Does anyone know how I can adjust this geometry to do this axisymmetric simulation of my diffuser?&lt;\/span&gt;&lt;span class=&#8221;ryNqvb&#8221;&gt; &lt;br&gt;P.S.: After I did this, I tried to open the mesh and it gave an error in the geometry that indicated that the diffuser line could not be there.&lt;\/span&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-436077","topic","type-topic","status-closed","hentry","topic-tag-2d-axisymmetric","topic-tag-error","topic-tag-geometry"],"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 a beginner in CFD and I want to do an axisymmetric simulation of a diffuser. 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