Divergence & Floating Point Error on using UDF -- CFD Online Discussion Forums

June 15, 2020, 03:53	Divergence	#2
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 35	Do you get divergence at the very first iteration? In that case, you need to ensure that all the denominators are non-zero and all the sources are comparatively small. Since you are using field values in the UDF, a good initial guess is also important. So, you may try running the solution for a few iterations before hooking the source UDFs. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

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