Learning Forum

[Amir]

I have a 2d case of a Perforated pipe inside a porous zone. Is there any way to calculate the (mass) flux on the interior wall between fluid and porous zones?(red arrows) [how much fluid is entering the porous zone?]

In the fluent this wall is under the "Internal" tab in BC and I am not able to chose it when calculating the flux.

Thanks

[Rob]

If the holes have a face ID (interior) then you can report data on that. From memory the interior facets don't store a normal so you may need to align them, /define/boundary-conditions/modify-zones/orient-face-zone  should solve that. 

[Amir]

Should I run the command before initialization and then run the calculation again?

The first try gave the message:

"Error: 47 contiguous regions in thread. This compromises the ability to orient faces consistently, you may need to separate the face zone to get consistent orientation." 

So I tried:

"define/boundary-conditions/modify-zones> sep-face-zone" 

and it broke the initial face into 47 faces (one for each hole).

And now trying

"/define/boundary-conditions/modify-zones> orient-face-zone" for each of those 47 faces is not making them available for flux calculation yet.

Thanks

[Rob]

If they're interiors they should be available. If not you may need to use either expressions or custom field functions to calculate the mass flow.