{"id":398055,"date":"2024-12-19T21:02:27","date_gmt":"2024-12-19T21:02:27","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-can-i-do-plate-heat-exchanger-analysis-please-help\/"},"modified":"2024-12-19T21:02:27","modified_gmt":"2024-12-19T21:02:27","slug":"how-can-i-do-plate-heat-exchanger-analysis-please-help","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-can-i-do-plate-heat-exchanger-analysis-please-help\/","title":{"rendered":"How can I do plate heat exchanger analysis? Please help"},"content":{"rendered":"<p>&lt;p&gt;I am doing analysis in laminar flow and energy equations on. It is so simple. I know hot water and cold water inlet temperature values. Hot water varies between 25 and 55 degrees and cold water inlet is 20 degree as constant. and want to calculate outlet temperatures but I can not get sensible results about cold water outlet. for example even hot fluid water is 55 degree, the cold water outlet is 25 degree. I defined all the variables as parameter set. specific heat, viscosity, mass flow rate and density are other variables. Finally, I decided to write an equation for the walls. Because for an inlet temperature of 55 degrees, the outlet temperature should be around 45 degrees. But I don&#8217;t know how to write the UDF function when I have so many parameter<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/19-12-2024-1734641953-1.png\" alt=\"\" \/> variables.<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/19-12-2024-1734641045-11.png\" alt=\"\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-398055","topic","type-topic","status-publish","hentry","topic-tag-fluent-ansys-1","topic-tag-heat_exchanger-1"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I am doing analysis in laminar flow and energy equations on. It is so simple. I know hot water and cold water inlet temperature values. 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