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-   -   Depth-averaged quantities in Ansys CFD-POST (VOF simulation) (https://www.cfd-online.com/Forums/fluent-multiphase/220616-depth-averaged-quantities-ansys-cfd-post-vof-simulation.html)

arhabib September 13, 2019 15:08

Depth-averaged quantities in Ansys CFD-POST (VOF simulation)
 
Hi,

I am looking for a way to display depth-averaged quantities such as depth-averaged velocity in a VOF model conducted in Fluent.
I found a thread under the EnSight forum to do it, but I'd like to use Ansys CFD-POST.

Any help will be appreciated.
Thanks in advance.

rupak504 September 14, 2019 10:27

Quote:

Originally Posted by arhabib (Post 744663)
Hi,

I am looking for a way to display depth-averaged quantities such as depth-averaged velocity in a VOF model conducted in Fluent.
I found a thread under the EnSight forum to do it, but I'd like to use Ansys CFD-POST.

Any help will be appreciated.
Thanks in advance.

Define a formula for depth-averaged velocity
Name it some new variable
calculate it

arhabib September 14, 2019 10:35

Thanks rupak504,

To define a formula, I'll need to average or integrate in only the vertical direction. Is there a function to do so?
I found that in EnSight the function radiograph_mesh does this but what's the corresponding function in CFD-POST? I don't want to use EnSight.

Thanks




Quote:

Originally Posted by rupak504 (Post 744687)
Define a formula for depth-averaged velocity
Name it some new variable
calculate it


rupak504 September 14, 2019 10:45

Quote:

Originally Posted by arhabib (Post 744689)
Thanks rupak504,

To define a formula, I'll need to average or integrate in only the vertical direction. Is there a function to do so?

Thanks

Define a vertical line in your domain.
Integrate the variable along that line.

arhabib September 14, 2019 10:53

Yes, but I am looking for a 2D map of depth-averaged velocity in the entire domain. It won't be practical to define vertical lines in the entire domain.
I am thinking a function that integrates in the vertical along all mesh nodes or faces. As I said Radiograph_mesh in EnSight does this. But I'm looking for a similar function in Ansys Post.



Quote:

Originally Posted by rupak504 (Post 744691)
Define a vertical line in your domain.
Integrate the variable along that line.



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