Moving wall

snowman · May 25, 2015, 09:47

I have a furnace which contains a heat sink. the heat sink is a belt which is moving in x-direction. I would like to simulate the moving heat sink ( assume whole heat sink is the belt) if possible in FLUENT. What should I need to do to see the behaviour of the belt?

I will appreciate your help. Thanks

`e` · May 25, 2015, 19:31

A moving wall (with a no slip shear condition) would affect the flow in viscous fluids. For example, consider the lid-driven cavity problem.

You can apply this moving wall as a boundary condition under Momentum > Wall Motion > Moving Wall and applying a nonzero speed in the x-direction.

snowman · May 26, 2015, 06:19

Hey, thanks, I have done that, but my question is if you move whole heat sink in x-direction with a non-zero velocity, is it possible to justify the result? I am bit confused of moving wall in x-direction blindly.. I need to understand what is happening when heat sink moves in 3-D simulation..

`e` · May 26, 2015, 06:48

If the heat sink is a belt then I assume it's a constant geometry (effectively) with a temperature gradient due to the removal of heat from the furnace. Have you tried imposing a temperature boundary condition on the belt at the inlet and observed the heat transfer to the belt?

May 25, 2015, 09:47	Moving wall	#1
snowman New Member Saleh tusher Join Date: Feb 2015 Posts: 3 Rep Power: 11	I have a furnace which contains a heat sink. the heat sink is a belt which is moving in x-direction. I would like to simulate the moving heat sink ( assume whole heat sink is the belt) if possible in FLUENT. What should I need to do to see the behaviour of the belt? I will appreciate your help. Thanks Last edited by snowman; May 26, 2015 at 04:28.

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May 25, 2015, 19:31		#2
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	A moving wall (with a no slip shear condition) would affect the flow in viscous fluids. For example, consider the lid-driven cavity problem. You can apply this moving wall as a boundary condition under Momentum > Wall Motion > Moving Wall and applying a nonzero speed in the x-direction.

May 26, 2015, 06:19		#3
snowman New Member Saleh tusher Join Date: Feb 2015 Posts: 3 Rep Power: 11	Hey, thanks, I have done that, but my question is if you move whole heat sink in x-direction with a non-zero velocity, is it possible to justify the result? I am bit confused of moving wall in x-direction blindly.. I need to understand what is happening when heat sink moves in 3-D simulation..

May 26, 2015, 06:48		#4
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	If the heat sink is a belt then I assume it's a constant geometry (effectively) with a temperature gradient due to the removal of heat from the furnace. Have you tried imposing a temperature boundary condition on the belt at the inlet and observed the heat transfer to the belt?