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Significant Reversed Flow at Outflow Problems [ANSYS FLUENT] |
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April 17, 2012, 16:38 |
Significant Reversed Flow at Outflow Problems [ANSYS FLUENT]
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#1 |
Member
NormalVector
Join Date: Oct 2010
Posts: 71
Rep Power: 16 |
Hello,
I'm running a closed domain cardiovascular simulation comprised of 2 mass flow inlet boundary conditions with 5 outflow boundary conditions. When the solution is calculated, the boundary conditions are held correctly but there is a huge amount of reversed flow happening at the boundaries. I have had the solution converge before to what looks like an appropriate flow field but I had to change a boundary condition and re-run the simulation. Now it isn't converging. I previously got the solution to converge by reducing the relaxation factors and starting with an initial velocity. Any ideas on how to eliminate reversed flow? Any help is appreciated. |
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May 16, 2012, 00:50 |
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#2 |
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NormalVector
Join Date: Oct 2010
Posts: 71
Rep Power: 16 |
For those of you wondering, I think I may have solved my problem by initializing the solution using one of my inlets. As it turns out, initial conditions are important.
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