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Search took 0.00 seconds. Search: Posts Made By: vangelis
Forum: FLUENT April 17, 2020, 04:40
Replies: 19
Views: 18,843
Posted By vangelis
you are welcome

you are welcome
Forum: FLUENT April 17, 2020, 04:14
Replies: 19
Views: 18,843
Posted By vangelis
It depend on the velocity the non linear term...

It depend on the velocity the non linear term becomes more important at high velocoties but everything is relevant.
Try with beta=0 and you may have slight underprediction of the pressure drop.
If...
Forum: FLUENT April 17, 2020, 03:52
Replies: 19
Views: 18,843
Posted By vangelis
both k (linear) and beta (nonlinear) terms are...

both k (linear) and beta (nonlinear) terms are measured by experiment by fitting a curve.

You do not have to enter both k and beta in Fluent, you can leave beta as 0 if you do not know it
Forum: FLUENT July 11, 2013, 10:35
Replies: 19
Views: 18,843
Posted By vangelis
Hi Tanjina, You may find some references in ...

Hi Tanjina,

You may find some references in
http://www.cfd-online.com/Forums/fluent/31888-perforated-plate.html

google for some more I guess.


If it is a perforated plate better model it...
Forum: FLUENT December 19, 2012, 08:33
Replies: 19
Views: 18,843
Posted By vangelis
I believe the equation for pressure drop is: ...

I believe the equation for pressure drop is:

Pressure drop= viscosity/permeability*U*[porous medium thickness] +0.5*porous jump*U^2*[porous medium thickness]

But you should better check the...
Forum: FLUENT November 27, 2012, 09:55
Replies: 19
Views: 18,843
Posted By vangelis
u r welcome, Yes, do not create a porous...

u r welcome,

Yes, do not create a porous jump in that interior zone.

This is to model something very thin, like the pressure
drop from a thin grill for example.
In your case you have the 3D...
Forum: FLUENT November 27, 2012, 08:45
Replies: 19
Views: 18,843
Posted By vangelis
Hi there, Indeed permeability is usually...

Hi there,

Indeed permeability is usually measured in m2 units
the so called Darcy or viscous pressure drop coefficient.

In Fluent however they seem to have it defined as 1 over permeability....
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