Wall at outlet

FluidDynamics · March 13, 2012, 07:00

I am getting wall at outlet.Even though I have extended outlet also simulation is with using porous media.

Stream wise coeff multiplier is 10.

Geometry is simple long pipe with elbow at inlet and rectangular cross section at outlet.

Porous media is inserted in rectangular cross section.

Pl guide.

ghorrocks · March 13, 2012, 16:35

The warning message simply says you are getting back flow at the outlet so it has generated artificial walls to stop it. If this is not affecting the accuracy of your simulation then ignore it. If it is then you have to move your exit boundary further away.

March 13, 2012, 07:00	Wall at outlet	#1
FluidDynamics New Member Neal Join Date: Nov 2010 Posts: 9 Rep Power: 0	I am getting wall at outlet.Even though I have extended outlet also simulation is with using porous media. Stream wise coeff multiplier is 10. Geometry is simple long pipe with elbow at inlet and rectangular cross section at outlet. Porous media is inserted in rectangular cross section. Pl guide.

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March 13, 2012, 16:35		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	The warning message simply says you are getting back flow at the outlet so it has generated artificial walls to stop it. If this is not affecting the accuracy of your simulation then ignore it. If it is then you have to move your exit boundary further away.