How to write a UDF of Viscous Resistance -- CFD Online Discussion Forums

October 8, 2020, 10:42	How to write a UDF of Viscous Resistance	#1
lbj007 Senior Member Join Date: Feb 2020 Posts: 114 Rep Power: 6	I found this in udf manual,but I don't understand the difference between F_PROFILE and C_PROFILE,in which case need I use F_PROFILE/C_PROFILE?

October 12, 2020, 06:04		#2
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	F_PROFILE defines variable on faces C_PROFILE defines variables in the centers of finite volumes (cells) __________________ best regards ****************************** press LIKE if this message was helpful

October 12, 2020, 07:03

lbj007

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Quote:

Originally Posted by AlexanderZ

F_PROFILE defines variable on faces
C_PROFILE defines variables in the centers of finite volumes (cells)

but shouldn't Viscous Resistance be the variable of cells? How could it be on faces?

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