Pressure BC

January 29, 2002, 06:03

What concentration values should be set at the pressure boundary?

If the value is zero does it affect the solution?

Thanks, Julie

January 31, 2002, 10:40

Hi Julie, If you put this boundary far way from the combustion zone, you can probably use the zero gradient assumption for the scalars. Regards Allan

February 1, 2002, 05:24

if the flow is going into the computational domain at the pressure boundary, then the situation is similar to inlet boundary condition, and all scalar quantities have to be specified. However, if the flow is going out, then the scalar values you specified will NOT be used by the code.

January 29, 2002, 06:03	Pressure BC	#1
Julie Polyakh Guest Posts: n/a	What concentration values should be set at the pressure boundary? If the value is zero does it affect the solution? Thanks, Julie

January 31, 2002, 10:40	Re: Pressure BC	#2
Allan Guest Posts: n/a	Hi Julie, If you put this boundary far way from the combustion zone, you can probably use the zero gradient assumption for the scalars. Regards Allan

February 1, 2002, 05:24	Re: Pressure BC	#3
john Guest Posts: n/a	if the flow is going into the computational domain at the pressure boundary, then the situation is similar to inlet boundary condition, and all scalar quantities have to be specified. However, if the flow is going out, then the scalar values you specified will NOT be used by the code.

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