ask for help about the reversed flow

yuhehuan · January 7, 2013, 02:36

Hi, everyone! I useds Fluent to simulate the airflow in a small domain and the inlet boundary is velocity inlet (0.25m/s), ouflow as the outlet bondary. In the iteration, there are no reversed flow, but at the 12th iteration, reversed flow occured and solution is converged at the 97th step. I am not sure if the soulution can be reliable because of the reversed flow. The inlet is revised from a triangle (0.007m*0.007m*0.007m). I am not sure the reason of the reversed flow. Dose somebody expain my question? Thank you so so much!

Regards!

yuhehuan · January 7, 2013, 02:38

Inlet is the green surface at the bottom, outlets are the red surfaces at the side.

yuhehuan · January 9, 2013, 01:28

Does anybody knows? please, many thaks!

Yanlong Li · January 9, 2013, 05:30

First of all, I think the color of Inlet face is blue, are Blue Green Color Blindness ?

Secondary, The reversed flow is Ok, it is just used to converge.

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January 7, 2013, 02:38		#2
yuhehuan Member Rong Yue Join Date: Oct 2012 Location: Canada Posts: 65 Rep Power: 13	Inlet is the green surface at the bottom, outlets are the red surfaces at the side.

January 9, 2013, 01:28		#3
yuhehuan Member Rong Yue Join Date: Oct 2012 Location: Canada Posts: 65 Rep Power: 13	Does anybody knows? please, many thaks!

January 9, 2013, 05:30		#4
Yanlong Li Member Yanlong Li Join Date: Jan 2013 Location: BeiJing Posts: 47 Rep Power: 13	First of all, I think the color of Inlet face is blue, are Blue Green Color Blindness ? Secondary, The reversed flow is Ok, it is just used to converge.