Creating a udf for a patch in snappyHexMesh -- CFD Online Discussion Forums

June 15, 2017, 03:52	Creating a udf for a patch in snappyHexMesh	#1
Afnan New Member Afnan Join Date: May 2017 Posts: 1 Rep Power: 0	Hello everyone, I want to create a user defined patch using two functions for two time-steps.I am using Helyx-OS to mesh the geometry but I cannot use it to create a patch as there are no options for user defined patches.The problem definition requires (from t=0 to t=microseconds) the fluid to start from rest and increase suddenly to 3.58 m/s, then decrease according to the cosine law.then run it for 30 microseconds.Any help regarding the use of udf's after running snappyHexMesh in Helyx-OS would be appreciated.

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