Can Flow3D Simulate Heat Transfer from Air

gangchen · June 27, 2013, 12:46

Hello All,

I plan to simulate flow in a channel. Can Flow3D add heat transfer from the air temperature into the water temperature in the channel?

Thank you

gangchen · August 26, 2013, 10:17

Then do you know how to do that?

JBurnham · August 27, 2013, 14:39

Physics = heat transfer (1st or 2nd order). No fluid-to-solid transfer is needed.

Set Fluids > thermal properties > "heat transfer to void type 1" (HFLV1) as the heat transfer coefficient between air and water.

Set void initial temperature = air temperature.

Set fluid initial temperature and boundary condition temperatures.

---that ought to do it. If it doesn't work, check the User Manual for the version you are using.

gangchen · August 28, 2013, 10:22

Thank you for your help. Can I ask you something? In the "heat transfer to void type 1", it means the heat transfer coefficient between air and water. But which number should we use, zero means no transfer? one means totally transfer?

JBurnham · August 28, 2013, 11:01

Units are [M T^-1 t^-3], so kg/K/s^3 in SI units. It's a heat transfer coefficient. All input variables are listed in the User Manual with their units. The chapter is called 'Input Variable Summary'.

gangchen · September 3, 2013, 17:18

Thanks a lot.

June 27, 2013, 12:46	Can Flow3D Simulate Heat Transfer from Air	#1
gangchen New Member Gang Chen Join Date: Jun 2013 Posts: 4 Rep Power: 12	Hello All, I plan to simulate flow in a channel. Can Flow3D add heat transfer from the air temperature into the water temperature in the channel? Thank you

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August 26, 2013, 10:17		#2
gangchen New Member Gang Chen Join Date: Jun 2013 Posts: 4 Rep Power: 12	Then do you know how to do that?

August 27, 2013, 14:39		#3
JBurnham Senior Member Jeff Burnham Join Date: Apr 2010 Posts: 204 Rep Power: 17	Physics = heat transfer (1st or 2nd order). No fluid-to-solid transfer is needed. Set Fluids > thermal properties > "heat transfer to void type 1" (HFLV1) as the heat transfer coefficient between air and water. Set void initial temperature = air temperature. Set fluid initial temperature and boundary condition temperatures. ---that ought to do it. If it doesn't work, check the User Manual for the version you are using.

August 28, 2013, 10:22		#4
gangchen New Member Gang Chen Join Date: Jun 2013 Posts: 4 Rep Power: 12	Thank you for your help. Can I ask you something? In the "heat transfer to void type 1", it means the heat transfer coefficient between air and water. But which number should we use, zero means no transfer? one means totally transfer?

August 28, 2013, 11:01		#5
JBurnham Senior Member Jeff Burnham Join Date: Apr 2010 Posts: 204 Rep Power: 17	Units are [M T^-1 t^-3], so kg/K/s^3 in SI units. It's a heat transfer coefficient. All input variables are listed in the User Manual with their units. The chapter is called 'Input Variable Summary'.

September 3, 2013, 17:18		#6
gangchen New Member Gang Chen Join Date: Jun 2013 Posts: 4 Rep Power: 12	Thanks a lot.