UDF derivative -- CFD Online Discussion Forums

March 30, 2012, 04:14	UDF derivative	#1
libia87 Member anonymous Join Date: Mar 2012 Posts: 45 Rep Power: 14	Hi! I want to define a derivative equation in a wall and I don't know what tipe of udf i have to use, can anyone helpme? my equation is: dC/dx= -v(1-k)C/D V,k and D have value (#define...) but how can I write de UDF??

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