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July 12, 2013, 16:23 |
reversed flow
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#1 |
New Member
sajjad bouzari
Join Date: Feb 2013
Posts: 4
Rep Power: 13 |
hi every one
I'm modeling blood flow in Aorta and I have velocity inlet boundary condition and pressure out lets when I try to iterate, I see this in fluent " reversed flow in xx faces on pressure outlet x". I can't change my boundary conditions so can you help me fix the problem. and also my case is Laminar , steady ,3d and i use "Least Squares Cell Based" I really need your help
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best regards |
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July 14, 2013, 23:12 |
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#2 |
Senior Member
Chris DeGroot
Join Date: Nov 2011
Location: Canada
Posts: 414
Rep Power: 17 |
Looks like your problem is not converging very well. Try adjusting relaxation settings and maybe try coupled solver. Also make sure the outlet is far enough downstream that back flow wouldn't be expected physically.
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July 15, 2013, 02:27 |
Check
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#3 |
New Member
Jasdeep
Join Date: Oct 2012
Posts: 13
Rep Power: 13 |
Check your flow direction as well. Or let it iterate for some time, it might stabilize.
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July 15, 2013, 03:04 |
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#4 |
New Member
Firas
Join Date: Jul 2013
Location: Iraq
Posts: 8
Rep Power: 12 |
I agree with our friend check comment ....let your iteration go ahead and see the result in quess reversed flow will finish after numbers of iterations
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