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-   -   UDF for lift force on a bluff body (http://www.cfd-online.com/Forums/fluent/36329-udf-lift-force-bluff-body.html)

sawa April 10, 2005 01:36

UDF for lift force on a bluff body
 
Hi, This is sawa. I'm working with a bluff body problem. I need to get the lift force acting on body inorder to calculate the response using udf. Could find the way to get a total force acting over the body using "valve.c" of udf tutorial. Is there any way to get only the lift force over the body. Thanks in advance. sawa

Anatoly April 10, 2005 04:05

Re: UDF for lift force on a bluff body
 
Hi, If you wish to calculate the component of total force working on one axis (for example Z) it can be made so: begin_f_loop (f, t)

{

F_AREA (A, f, t);

force += F_P (f, t) * A[2];

} end_f_loop (f, t)

Anatoly

Luca April 11, 2005 03:06

Re: UDF for lift force on a bluff body
 
Yes, thatěs right. But that works only for the segregated solver...Any idea for the ciupled solver?


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