reversed flow

nouri67 · December 11, 2010, 14:27

hi
What is the meaning "reversed flow" and how to prevent it?
Thanks

xrs333 · December 12, 2010, 00:21

A "Reversw Flow" message indicates you that the fluid flows in wrong direction at the flow boundaries, for example, flowing into the domain through an outlet occurs where the flow is expected out of the domain.
This occurs as often the case when the outlet boundary is ill posed.

nouri67 · December 12, 2010, 11:01

I put the boundary conditions OUT FLOW

One issue is that flow in a vertical tube that has gravity rises and after bending 90 degrees pours out
Remove the solution gives reversed out flow
Thanks your answer

December 11, 2010, 14:27	reversed flow	#1
nouri67 New Member Mohammad Join Date: Dec 2010 Posts: 3 Rep Power: 15	hi What is the meaning "reversed flow" and how to prevent it? Thanks

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December 12, 2010, 00:21		#2
xrs333 Senior Member xrs333 Join Date: Aug 2010 Posts: 125 Rep Power: 16	A "Reversw Flow" message indicates you that the fluid flows in wrong direction at the flow boundaries, for example, flowing into the domain through an outlet occurs where the flow is expected out of the domain. This occurs as often the case when the outlet boundary is ill posed.

December 12, 2010, 11:01		#3
nouri67 New Member Mohammad Join Date: Dec 2010 Posts: 3 Rep Power: 15	I put the boundary conditions OUT FLOW One issue is that flow in a vertical tube that has gravity rises and after bending 90 degrees pours out Remove the solution gives reversed out flow Thanks your answer