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Emergency:udf for moving surface

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Old   February 9, 2017, 08:56
Default Emergency:udf for moving surface
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fereshte
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Hi
I need a UDF in fluent for a moving surface with constant velocity and I'm not familiar with code writing .
If you already have this UDF , please help me.


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Old   February 9, 2017, 09:18
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Why do you need a UDF for something implemented as a standard boundary condition in Fluent?
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Old   February 9, 2017, 09:56
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Quote:
Originally Posted by pakk View Post
Why do you need a UDF for something implemented as a standard boundary condition in Fluent?


This surface has 2 boundary conditions , so one of them is needed to be defined by user


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Old   February 9, 2017, 09:57
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I can not make sense of what you are saying.
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Old   February 9, 2017, 10:17
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Quote:
Originally Posted by pakk View Post
I can not make sense of what you are saying.


In fluent you can give only one boundary condition to each surface , my problem is to give two to my surface


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Old   February 9, 2017, 10:20
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Which two boundary conditions are you talking about?

1. moving surface with constant velocity
2. ???
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Old   February 9, 2017, 12:20
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Quote:
Originally Posted by pakk View Post
Which two boundary conditions are you talking about?

1. moving surface with constant velocity
2. ???


Velocity inlet

It's a simulation of a drill bit which is moving, and there is a mass flow through its surface at the same time


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