Conjugate heat transfer to a sphere

mohmdasher · December 21, 2020, 02:52

I'm trying to simulate a heat transfer process wherein a metallic ball is heated by hot air. Since a solid sphere will have only one external boundary, how do I provide an interface for CHT and boundary conditions for the metallic sphere at the same boundary?

MCoil · December 21, 2020, 13:28

To do this, you will want to flag the boundary that defines the sphere as an interface boundary. Then you define the forward region (assuming normals point out) as the fluid region and the reverse region as the solid. You will be able to initialize those regions separately in initialize.in to set their conditions.

Try looking at the example case with conjugate heat transfer on the piston. You can set up your interface boundary in the way the piston is handled.

mohmdasher · December 22, 2020, 00:30

Thank you M. Coil, I will check it out.

December 21, 2020, 02:52	Conjugate heat transfer to a sphere	#1
mohmdasher New Member Asher Join Date: Jun 2020 Posts: 18 Rep Power: 5	I'm trying to simulate a heat transfer process wherein a metallic ball is heated by hot air. Since a solid sphere will have only one external boundary, how do I provide an interface for CHT and boundary conditions for the metallic sphere at the same boundary?

December 21, 2020, 13:28		#2
MCoil Member Millicent Coil Join Date: Aug 2017 Posts: 38 Rep Power: 8	To do this, you will want to flag the boundary that defines the sphere as an interface boundary. Then you define the forward region (assuming normals point out) as the fluid region and the reverse region as the solid. You will be able to initialize those regions separately in initialize.in to set their conditions. Try looking at the example case with conjugate heat transfer on the piston. You can set up your interface boundary in the way the piston is handled. __________________ Millicent Coil Principal Engineer - Applications Convergent Science Madison, WI

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December 22, 2020, 00:30		#3
mohmdasher New Member Asher Join Date: Jun 2020 Posts: 18 Rep Power: 5	Thank you M. Coil, I will check it out.