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How to set the Heat Flux boundary condition at Outlet |
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September 21, 2011, 02:58 |
How to set the Heat Flux boundary condition at Outlet
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#1 |
New Member
creddy
Join Date: Aug 2010
Location: Kanpur/UP/India
Posts: 25
Rep Power: 16 |
Hi,
I am trying to model the gas-stirred vessel....where gas injected from the nozzle located at the bottom of vessel consisting of liquid metal...so I am using Degassing boundary condition at the top of vessel which allows gas to escape and acts as a free slip wall to liquid metal (which is not allowed to go out)... Here I am solving the Thermal Energy equation for only liquid metal. I want to specify the heat flux boundary condition for liquid metal at the outlet boundary...So I am specifying it using the source for the Energy equation...but in CFX Post when I am checking the results...it is not showing the correct heat flux which I applied initially.... Can some one tell me is it right way to specify the Heat Flux BC at outlet (Degassing BC)... Here I am attaching the CCL file of outlet BC. FLOW: DOMAIN: Default Domain BOUNDARY: top Boundary Type = OUTLET Interface Boundary = Off Location = TOP BOUNDARY CONDITIONS: FLOW REGIME: Option = Subsonic END MASS AND MOMENTUM: Option = Degassing Condition END END BOUNDARY SOURCE: FLUID: M Steel SOURCES: EQUATION SOURCE: energy Flux = -12500 [W m^-2] Option = Flux END END END END END END END Thanks in advance. Regards, Niranjan Reddy. |
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September 21, 2011, 06:53 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,828
Rep Power: 144 |
Looks OK. Your flux will not appear in the heat flux in the results file, you will have to see its effects on the metal (ie heating or cooling it).
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September 21, 2011, 06:59 |
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#3 |
New Member
creddy
Join Date: Aug 2010
Location: Kanpur/UP/India
Posts: 25
Rep Power: 16 |
Thanks Glenn ...the effect of flux is shown at the end of solver file....but it is not shown in the CFX-Post....(i.e. wall heat flux or heat flux).
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September 21, 2011, 07:44 |
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#4 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,828
Rep Power: 144 |
Yes, that is correct I think. Been a while since I checked it but it sounds right.
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