Heat Generation rate and Free stream temperature

kr660170 · August 8, 2018, 03:47

Hi, Can someone explain me how to calculate the heat Generation rate and what is called free stream temperature in convection boundary condition?

LuckyTran · August 8, 2018, 11:02

The freestream temperature is the reference temperature that is paired with the definition of the heat transfer coefficient per Newton's law of cooling. If you know what the heat transfer coefficient is, then you must also know the reference temperature because you cannot define a heat transfer coefficient until after you have defined a reference temperature.

Heat generation rate is part of your problem definition, you should know what it is. It is only applicable though, if you have a non-zero wall thickness.

August 8, 2018, 03:47	Heat Generation rate and Free stream temperature	#1
kr660170 New Member Karthik Join Date: Apr 2017 Posts: 29 Rep Power: 9	Hi, Can someone explain me how to calculate the heat Generation rate and what is called free stream temperature in convection boundary condition?

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August 8, 2018, 11:02		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,674 Rep Power: 65	The freestream temperature is the reference temperature that is paired with the definition of the heat transfer coefficient per Newton's law of cooling. If you know what the heat transfer coefficient is, then you must also know the reference temperature because you cannot define a heat transfer coefficient until after you have defined a reference temperature. Heat generation rate is part of your problem definition, you should know what it is. It is only applicable though, if you have a non-zero wall thickness.