solid/air interface heat source problem

nvm2011 · April 20, 2012, 12:19

I am doing a simulation with the model exploded below,the whole part is in a natural convection cooling state with the air temperature of 193K,and at the interfaces consists of solid-1 and solid-3(3 interfaces),there is a heat source in every plane with a heat flux of 3000 W/m^2,I don't know how to set the heat flux at the interfaces,do i need set the heat source at the air side or the solid side?and how to set the boundary condition of the interfaces?My previous simulation results gives a rather low temperature compared with my experimental data.
1.jpg

2.jpg

ghorrocks · April 21, 2012, 08:40

Quote:

do i need set the heat source at the air side or the solid side?

Either, makes no difference. They are coupled together.

Quote:

how to set the boundary condition of the interfaces?

As a source term on the tab in the domain settings of the interface.

nvm2011 · April 21, 2012, 10:46

Quote:

Originally Posted by ghorrocks

Either, makes no difference. They are coupled together.

As a source term on the tab in the domain settings of the interface.

@ghorrocks,thank you for your patient explanation.but what term do i need to select in the equation source term?energy or anything else?

ghorrocks · April 22, 2012, 08:50

Yes, add a heat flux of 3kW/m^2 to the energy equation.

April 20, 2012, 12:19	solid/air interface heat source problem	#1
nvm2011 New Member Mustard Join Date: Apr 2012 Posts: 6 Rep Power: 14	I am doing a simulation with the model exploded below,the whole part is in a natural convection cooling state with the air temperature of 193K,and at the interfaces consists of solid-1 and solid-3(3 interfaces),there is a heat source in every plane with a heat flux of 3000 W/m^2,I don't know how to set the heat flux at the interfaces,do i need set the heat source at the air side or the solid side?and how to set the boundary condition of the interfaces?My previous simulation results gives a rather low temperature compared with my experimental data. 1.jpg 2.jpg

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April 22, 2012, 08:50		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	Yes, add a heat flux of 3kW/m^2 to the energy equation.