Add passive scalar temperature equation to the Channelflow

YANGLIANG · March 8, 2010, 06:16

Hi Foamers,

I want to add a passive scalar temperature equation to the channel flow. So I have some problem in the temperature periodic boundary conditions for the inlet and outlet.

If I simply set the inlet and outlet to periodic, the temperature would keep increasing during the running time.

How to deal with that?

Thank you for your comments

Liang

santos · March 9, 2010, 05:23

Hi,

You can apply directMapped boundary condition to the inlet, and map the outlet values to it. This allow you to maintain an average temperature value at the inlet, while using the outlet temperature profile.

Regards,
Jose Santos

March 8, 2010, 06:16	Add passive scalar temperature equation to the Channelflow	#1
YANGLIANG New Member yangliang Join Date: Mar 2010 Posts: 2 Rep Power: 0	Hi Foamers, I want to add a passive scalar temperature equation to the channel flow. So I have some problem in the temperature periodic boundary conditions for the inlet and outlet. If I simply set the inlet and outlet to periodic, the temperature would keep increasing during the running time. How to deal with that? Thank you for your comments Liang

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March 9, 2010, 05:23		#2
santos Senior Member Jose Luis Santos Join Date: Mar 2009 Location: Portugal Posts: 215 Rep Power: 18	Hi, You can apply directMapped boundary condition to the inlet, and map the outlet values to it. This allow you to maintain an average temperature value at the inlet, while using the outlet temperature profile. Regards, Jose Santos