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-   -   How to write a UDF of Viscous Resistance (https://www.cfd-online.com/Forums/fluent-udf/230850-how-write-udf-viscous-resistance.html)

lbj007 October 8, 2020 10:42
How to write a UDF of Viscous Resistance
 
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?

http://cdn.img.headns.com/2010/4d2c73db2736d.png

AlexanderZ October 12, 2020 06:04
F_PROFILE defines variable on faces
C_PROFILE defines variables in the centers of finite volumes (cells)

lbj007 October 12, 2020 07:03
Quote:
Originally Posted by AlexanderZ (Post 785029)
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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