{"id":404323,"date":"2025-01-09T18:44:54","date_gmt":"2025-01-09T18:44:54","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/sigsegv-error-in-hydrogen-adsorption-desorption-simulation-with-udfs\/"},"modified":"2025-01-09T18:44:54","modified_gmt":"2025-01-09T18:44:54","slug":"sigsegv-error-in-hydrogen-adsorption-desorption-simulation-with-udfs","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/sigsegv-error-in-hydrogen-adsorption-desorption-simulation-with-udfs\/","title":{"rendered":"SIGSEGV error in hydrogen adsorption-desorption simulation with UDFs"},"content":{"rendered":"<p>&lt;p&gt;Hello,&lt;br&gt;&lt;br&gt;I am trying to simulate the adsorption-desorption process of hydrogen in activated carbon using ANSYS Fluent (student version). My simulation involves 4 user-defined scalars (UDSs). The initialization step completes successfully without any issues. Also, my User-Defined Functions (UDFs) compile without errors.&lt;br&gt;&lt;br&gt;However, when I try to run the simulation, it stops immediately, and the following message appears in the console:&lt;br&gt;Updating solution at time level N&#8230;&lt;br&gt;done.&lt;br&gt;&lt;br&gt;iter continuity x-velocity y-velocity energy k epsilon uds-0 uds-1 uds-2 uds-3 time\/iter&lt;br&gt;&lt;br&gt;==============================================================================&lt;br&gt;&lt;br&gt;Node 1: Process 5678: Received signal SIGSEGV.&lt;br&gt;&lt;br&gt;==============================================================================&lt;br&gt;&lt;br&gt;==============================================================================&lt;br&gt;&lt;br&gt;Node 2: Process 15482: Received signal SIGSEGV.&lt;br&gt;&lt;br&gt;==============================================================================&lt;br&gt;&lt;br&gt;==============================================================================&lt;br&gt;&lt;br&gt;Node 0: Process 19840: Received signal SIGSEGV.&lt;br&gt;&lt;br&gt;==============================================================================&lt;br&gt;&lt;br&gt;==============================================================================&lt;br&gt;&lt;br&gt;Node 3: Process 21612: Received signal SIGSEGV.&lt;br&gt;&lt;br&gt;==============================================================================&lt;br&gt;&lt;br&gt;===============Message from the Cortex Process================================&lt;br&gt;&lt;br&gt;Fatal error in one of the compute processes.&lt;br&gt;&lt;br&gt;==============================================================================&lt;br&gt;I am running this simulation on a system with the following specifications:&lt;br&gt;16 GB RAM&lt;br&gt;Intel Core i7 13th Gen processor&lt;br&gt;Could this error be related to how my UDFs or UDSs are implemented?&lt;br&gt;Could this issue be related to hardware limitations or Fluent&#8217;s student version restrictions?&lt;br&gt;I would appreciate any guidance on resolving this problem.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-404323","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 am trying to simulate the adsorption-desorption process of hydrogen in activated carbon using ANSYS Fluent (student version). 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