How to change boundary condition type in udf?

malekan.cfd · February 23, 2018, 08:12

Dear all,

I have an velocity inlet boundary which I want to change to pressure outlet during the transient analysis, when it reaches a time value. Can anyone help me do that using udf, since I have a profile I need to assign to the velocity inlet as well.

Thanks,

reza_65 · February 23, 2018, 11:04

Quote:

Originally Posted by malekan.cfd

Dear all,

I have an velocity inlet boundary which I want to change to pressure outlet during the transient analysis, when it reaches a time value. Can anyone help me do that using udf, since I have a profile I need to assign to the velocity inlet as well.

Thanks,

Hi there

I have the same sorts of problem.
Any progress?

I need to change my B.C if my temperature reaches certain amounts!

malekan.cfd · February 23, 2018, 13:39

I still didn't find any solution for the udf part, but I found a solution using scheme programming, look at this post, it may help you:

UDF: Change boundary condition. Velocity inlet to pressure inlet at time "t"

February 23, 2018, 08:12	How to change boundary condition type in udf?	#1
malekan.cfd Member Join Date: Dec 2017 Posts: 34 Rep Power: 8	Dear all, I have an velocity inlet boundary which I want to change to pressure outlet during the transient analysis, when it reaches a time value. Can anyone help me do that using udf, since I have a profile I need to assign to the velocity inlet as well. Thanks,

February 23, 2018, 13:39	Look at this post	#3
malekan.cfd Member Join Date: Dec 2017 Posts: 34 Rep Power: 8	I still didn't find any solution for the udf part, but I found a solution using scheme programming, look at this post, it may help you: UDF: Change boundary condition. Velocity inlet to pressure inlet at time "t"

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