|March 8, 2011, 00:46||
okay, the Womersley solution validation
Join Date: Feb 2011
Posts: 3Rep Power: 8
nobody answers my last post. So I think I need to ask my question in another way.
I think people in this community already did validation against the theoritical solution a lot before.
My question is this:
I have a velocity inlet V(t)=cos(t), I use icoFoam as the solver, (as in the cavity tutorial), but I need to change the BC from constant inlet velocity to varying bc. How to do it then?
One answer I found online is oscillatingFixedValue:
But after checking the result, i do not think it is pure oscilating, instead, it is a function of sine together with a steady positive flow rate.
if I delete 1 from the above formular, there is simly no flow then.
I want a flow with back flow at some time steps.
Anybody knows what is wrong? or any other function instead of oscillatingFixedValue?
Last edited by nobound; March 8, 2011 at 13:11.
|March 8, 2011, 03:42||
Join Date: Sep 2009
Posts: 790Rep Power: 14
Why are you applying this BC in the cavity, and not in pipe, or duct flow, as one would expect? What are your outflow boundary conditions?
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