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problems with UDF to set contact angle

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Old   April 30, 2009, 10:43
Default problems with UDF to set contact angle
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I am using Fluent to simulate a water droplet flowing down a vertical surface. so it's a multiphase flow and I try to use UDF to define the droplet contact angle as follows:

#include "udf.h"
face_t f;


but it didn't seem to be working properly. my question is will the thread pointer in DEFINE_PROFILE be automatically assigned to the bounday face (between water and air) after hooking UDF to contact angle in GUI? or do i need to specify the boundary face thread pointer before looping?

thank you

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