{"id":407034,"date":"2025-01-25T13:33:29","date_gmt":"2025-01-25T13:33:29","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/source-term-udf\/"},"modified":"2025-01-27T15:02:47","modified_gmt":"2025-01-27T15:02:47","slug":"source-term-udf","status":"answered","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/source-term-udf\/","title":{"rendered":"Source term UDF"},"content":{"rendered":"<p>&lt;p&gt;I am using a DEFINE_SOURCE UDF to remove mass from liquid phase. The output is also being saved to a UDM so that it can be used in another DEFINE_SOURCE UDF to add mass to the gas phase.&nbsp;&lt;br&gt;&lt;br&gt;In my simulation results, the mass in the liquid phase is seen to reduce when I compare the inlet and outlet mass flowrates but the mass in the gas phase does not show any significant increase. I made a contour plot of the UDM with exponential format values and it seems to be zero in the mixture domain.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-407034","topic","type-topic","status-answered","hentry","topic-tag-define-source","topic-tag-udf","topic-tag-udm"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I am using a DEFINE_SOURCE UDF to remove mass from liquid phase. The output is also being saved to a UDM so that it can be used in another DEFINE_SOURCE UDF to add mass to the gas phase. In my simulation results, the mass in the liquid phase is seen to reduce when I compare the\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/source-term-udf\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Source term UDF | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I am using a DEFINE_SOURCE UDF to remove mass from liquid phase. The output is also being saved to a UDM so that it can be used in another DEFINE_SOURCE UDF to add mass to the gas phase. 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