Reversed flows in laminar flow
Hello,
The flow in my simulation is laminar according to the calculations of Reynolds number. But fluent warns for reversed flows and it affects the convergency, especially for continuity equation. Also, hot air goes to upward direction in this simulation (flow direction is downwards). It never converges. When I used standard k-e turbulence model, I obtain better convergence. Can I use turbulence model for laminar flow? Does it effect the results? Thank you. |
Don't use laminar model for turbulent flows and don't use turbulence models for laminar flows.
Is the reversed flow expected? If it is expected, make sure you specify the correct back-flow properties. If it is not expected, try to fix it. Undesirable reversed flow can easily be caused by an unrealistic boundary condition, i.e. a pressure outlet too close to your domain. |
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Thank you. |
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