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Old   June 4, 2003, 12:38
Default UDF Boundary Condition
  #1
Dennis
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When using a UDF to implement a BC does the profile have to be a continuous function or can you insert specific points on the boundary and have Fluent fill in the gaps.

Thanks for your help
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Old   June 4, 2003, 13:27
Default Re: UDF Boundary Condition
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Murali
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I do nto think u can think of FLuent filling the gap. You have two options:

(1) define a profile (2) read data from a file for the mesh points

I donot think any other method works.

Murali
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Old   June 4, 2003, 17:53
Default Re: UDF Boundary Condition
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ap
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You can interpolate your data and implement the equation you obtained in a UDF.

Hi

ap
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Old   June 4, 2003, 22:41
Default Re: UDF Boundary Condition
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DENG
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Maybe you do not explain your problem cleasly. if you want to define a function along the boundary, it is simple. if you want to define an incontinuous boundary condition on the two sides of the boundary, it can be implemented by UDF.
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Old   June 6, 2003, 16:17
Default Re: UDF Boundary Condition
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Dennis
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Thanks for your help. What I have is a 2-D boundary plane on which I will know velocities at cerain points in a grid taken from experimental data. From what you've said I will use a math program to create a function from the velocities and then use a UDF to implement it, unless someone knows of a better way.
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Old   June 7, 2003, 10:09
Default Re: UDF Boundary Condition
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mahesh
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you can give your data points through piecewise linear function.. But I dont know how actually works.. c the fluent manual for B.C.

Mahesh
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