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-   -   accessing lift fore/drag force in UDF (http://www.cfd-online.com/Forums/fluent/39867-accessing-lift-fore-drag-force-udf.html)

changkiang February 28, 2006 00:03

accessing lift fore/drag force in UDF
 
hi,everybody! i'm trying to access lift fore(or lift coefficient)/drag force(or coefficient) in UDF and i don't know how. by the way, i'm simulating flow over a single circular cylinder.

thanx in advance for ur response!

changkiang March 1, 2006 01:13

Re: accessing lift fore/drag force in UDF
 
well, it came to me, i can just read the file saved cl-history!

changkiang March 1, 2006 07:51

Re: accessing lift fore/drag force in UDF
 
but i think it quite time-consuming, someone said lift and drag can be picked-up from fluent, but how?

can anyone help me?

thank u very much!

Dan March 1, 2006 08:40

Re: accessing lift fore/drag force in UDF
 
Not sure if it's what you're looking for, but you can use "monitor-force" to monitor the lift and drag coefficients after each iteration or time-step.

changkiang March 2, 2006 03:54

Re: accessing lift fore/drag force in UDF
 
thanx for responding. well, i'm programming a UDF and the lift(drag) force is used, then the easiest way to access it in UDF is?

changkiang March 2, 2006 04:05

Re: accessing lift fore/drag force in UDF
 
or how we can access the values( Reprot\Forces) in UDF DIRECTLY.

thanks

sarjerao May 11, 2015 15:00

I also want same thing in my UDF! Did you solved that problem.
If yes, what you did to access lift/drag in udf.


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