turbulent intensity for heat exchangers

soheil1991 · January 4, 2018, 04:20

Hi All..
I want to model 7 rows of a heat exchanger.
My B.C is velocity inlet and pressure outlet and two symmetric condition for up and down.
In fluent guide said that turbulence intensity for heat exchangers is 5-20%.
what should I exactly set my turbulent intensity at inlet and outlet.
(Not that my Reynolds number at inlet B.C is 5000 and 100000 ..tow different cases)

LuckyTran · January 5, 2018, 06:10

Take your best guess or try them all and do a parametric sweep. Learn the sensitivity of the problem to the inlet turbulence intensity.

January 4, 2018, 04:20	turbulent intensity for heat exchangers	#1
soheil1991 New Member soheil Join Date: Mar 2017 Posts: 7 Rep Power: 9	Hi All.. I want to model 7 rows of a heat exchanger. My B.C is velocity inlet and pressure outlet and two symmetric condition for up and down. In fluent guide said that turbulence intensity for heat exchangers is 5-20%. what should I exactly set my turbulent intensity at inlet and outlet. (Not that my Reynolds number at inlet B.C is 5000 and 100000 ..tow different cases)

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January 5, 2018, 06:10		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,763 Rep Power: 66	Take your best guess or try them all and do a parametric sweep. Learn the sensitivity of the problem to the inlet turbulence intensity.