calculation of the heat transfer coefficient

destroy · February 2, 2018, 20:28

Hello,

I have a simple geometry and case - transient turbulent flow through a pipe. I set the case as axisymmetric.
The pipe is cooled by the air flow. Initial pipe temperature: 373 K, inlet temperature 303 K. Outside the pipe I set HTC=100 W/m2K and 303 K.

I want to calculate the distribution of the HTC in space and in time. For this I divided the length by 20, and on the every of 20 section I want to calculate some average HTC. Which Fluent option for this should I choose?

Regards

Haidar Fakhri · February 2, 2018, 20:32

Hi destroy

I try to help u
Please, you make a line sample in the inner pipe, as long as the wall. Ur case is transient, so u should make a graphic to observe every time step u set.

Thanks

destroy · February 3, 2018, 07:47

I dont understand what do you mean and how your advice will help me.
The main question is - what option should I choose? Reports->surface integrals-> ...??
There are many options for calculating the HTC and I dont know which is valid for my case.

February 2, 2018, 20:28	calculation of the heat transfer coefficient	#1
destroy Senior Member Marcin Join Date: Jun 2016 Posts: 101 Rep Power: 11	Hello, I have a simple geometry and case - transient turbulent flow through a pipe. I set the case as axisymmetric. The pipe is cooled by the air flow. Initial pipe temperature: 373 K, inlet temperature 303 K. Outside the pipe I set HTC=100 W/m2K and 303 K. I want to calculate the distribution of the HTC in space and in time. For this I divided the length by 20, and on the every of 20 section I want to calculate some average HTC. Which Fluent option for this should I choose? Regards

February 2, 2018, 20:32	calculation of the heat transfer coefficient	#2
Haidar Fakhri New Member Suraji Join Date: Mar 2016 Posts: 18 Rep Power: 11	Hi destroy I try to help u Please, you make a line sample in the inner pipe, as long as the wall. Ur case is transient, so u should make a graphic to observe every time step u set. Thanks

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February 3, 2018, 07:47		#3
destroy Senior Member Marcin Join Date: Jun 2016 Posts: 101 Rep Power: 11	I dont understand what do you mean and how your advice will help me. The main question is - what option should I choose? Reports->surface integrals-> ...?? There are many options for calculating the HTC and I dont know which is valid for my case.