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-   -   How to implimemt non-fixed gradient boundary condition ? (https://www.cfd-online.com/Forums/openfoam-pre-processing/151150-how-implimemt-non-fixed-gradient-boundary-condition.html)

rapierrz April 5, 2015 04:17

How to implimemt non-fixed gradient boundary condition ?
 
Hi friends,

I want to impliment below non-fixed boundary condition :

for a scalar field C , that is volume fraction : for example

in 0/C file :

downWall
{
gradient 5000/T;
}

T is temprature that change in every time step.

please Help me.:confused:

agustinvo April 20, 2015 10:21

Hello

you should use GroovyBC to do that. In the expression you have to introduce, you should put the formula you propose.

neelarun April 8, 2020 04:23

Hello rapierrz,

Have you managed to solve your problem using GroovyBC?
I have faced a similar problem and I would like to know how you solved it?

neelarun.


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