problem about pressure boundary condition at sharp corner

yhaomin2007 · July 30, 2013, 13:54

Hey, all,
I have a question about the pressure boundary condition. Usually people use zeroGradient condition for pressure at wall. This condition works fine for most situations. But I have a sharp corner in my simulation, the this condition will cause a singularity and this corner. The pressure at this point keeps decreasing and never recover.
Does anyone know if there is other condition we can set for pressure at wall??

thank you all in advance.~

yujiangang1025 · January 19, 2016, 10:24

Quote:

Originally Posted by yhaomin2007

Hey, all,
I have a question about the pressure boundary condition. Usually people use zeroGradient condition for pressure at wall. This condition works fine for most situations. But I have a sharp corner in my simulation, the this condition will cause a singularity and this corner. The pressure at this point keeps decreasing and never recover.
Does anyone know if there is other condition we can set for pressure at wall??

thank you all in advance.~

Have you solved your problem?

July 30, 2013, 13:54	problem about pressure boundary condition at sharp corner	#1
yhaomin2007 Member Haomin Yuan Join Date: Jan 2012 Location: Madison, Wisconsin, USA Posts: 59 Rep Power: 14	Hey, all, I have a question about the pressure boundary condition. Usually people use zeroGradient condition for pressure at wall. This condition works fine for most situations. But I have a sharp corner in my simulation, the this condition will cause a singularity and this corner. The pressure at this point keeps decreasing and never recover. Does anyone know if there is other condition we can set for pressure at wall?? thank you all in advance.~

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