{"id":378084,"date":"2024-08-13T08:50:07","date_gmt":"2024-08-13T08:50:07","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/natural-convection-simulation-unphysical-weird-pressure-field\/"},"modified":"2024-08-13T08:50:07","modified_gmt":"2024-08-13T08:50:07","slug":"natural-convection-simulation-unphysical-weird-pressure-field","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/natural-convection-simulation-unphysical-weird-pressure-field\/","title":{"rendered":"Natural convection simulation unphysical weird pressure field"},"content":{"rendered":"<p>Hello, I&#8217;m conducting a natural convection simulation using Fluent, and while I&#8217;m satisfied with most of the results, the pressure field appears unphysical. As depicted in the accompanying image, my model consists of a heated source cylinder positioned centrally in a room, which naturally heats the air. This causes the air to be drawn in at the inlet and expelled at the outlet due to density differences. I defined inlet and outlet vents with pressure loss coefficients of 0.5 for the inlet and 1 for the outlet, respectively. The fluid motion, velocity field, and the temperature and density fields all appear physically acceptable. However, the highest pressure values are observed at the outlet, as can be seen in the image below. The operating conditions and reference values are defined correctly.<\/p>\n<p><img decoding=\"async\" title=\"geometry\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/13-08-2024-1723538910-geometry.PNG\" alt=\"\"><\/p>\n<p><img decoding=\"async\" title=\"Static pressure field\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/13-08-2024-1723538952-static_pressure.png\" alt=\"\"><\/p>\n<p>&nbsp;<\/p>\n<p>Best regards,&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-378084","topic","type-topic","status-publish","hentry"],"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 conducting a natural convection simulation using Fluent, and while I&#039;m satisfied with most of the results, the pressure field appears unphysical. 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