velocity boundary

MECHENG.NIOO · February 19, 2012, 06:38

Hi

how can implement the velocity in angled pipe as boundary condition in openfoam solvers when the velocity components are unknown(Ux , Uy , Uz)? and only the velocity /U/ magnitude in direct of pipe is defined.

laurensvd · February 29, 2012, 06:17

The only thing I can think of is writing a boundary condition that measures the velocity components at the wall, scale these components such that mag U is as you want and then update the value. I didnt check the code but maybe the partial slip B.C. is a good starting point for this.

February 19, 2012, 06:38	velocity boundary	#1
MECHENG.NIOO New Member nioo Join Date: Feb 2012 Posts: 1 Rep Power: 0	Hi how can implement the velocity in angled pipe as boundary condition in openfoam solvers when the velocity components are unknown(Ux , Uy , Uz)? and only the velocity /U/ magnitude in direct of pipe is defined.

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February 29, 2012, 06:17		#2
laurensvd Member Laurens Van Dyck Join Date: Jul 2011 Location: Netherlands/Germany Posts: 34 Rep Power: 14	The only thing I can think of is writing a boundary condition that measures the velocity components at the wall, scale these components such that mag U is as you want and then update the value. I didnt check the code but maybe the partial slip B.C. is a good starting point for this.