mixing cup temperature

gtheo · June 23, 2011, 10:32

Hello,

I want to calculate the mixing cup temperature - Tm=(1/umean*A)*<integral>(uT dA) - at a cross section (plane) of a rectangular duct. I have the velocity and temperature profile on the plane. Any suggestions on how to calculate the integral on the plane?

gtheo · June 23, 2011, 10:33

I meant the velocity and temperature FIELD.

ghorrocks · June 23, 2011, 18:59

This is easy. In CFD-Post create a user variable which is u*T. Then use the function calculator to get the area integral of this user variable over the area you define.

jtipton2 · June 24, 2011, 16:21

I believe you can also use massFlowAve(Temperature)@<plane name> to achieve the same calculation.

xiaobingwill · October 26, 2016, 17:02

build a custom field function in define. input u*T on the panel. get the integral then do the operations you want.

June 23, 2011, 10:32	mixing cup temperature	#1
gtheo New Member George Theo Join Date: Apr 2011 Posts: 13 Rep Power: 15	Hello, I want to calculate the mixing cup temperature - Tm=(1/umeanA)<integral>(uT dA) - at a cross section (plane) of a rectangular duct. I have the velocity and temperature profile on the plane. Any suggestions on how to calculate the integral on the plane?

October 26, 2016, 17:02	custom field function i	#5
xiaobingwill New Member Xiaobing Zhang Join Date: Apr 2014 Posts: 12 Rep Power: 11	build a custom field function in define. input u*T on the panel. get the integral then do the operations you want.

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June 23, 2011, 10:33		#2
gtheo New Member George Theo Join Date: Apr 2011 Posts: 13 Rep Power: 15	I meant the velocity and temperature FIELD.

June 23, 2011, 18:59		#3
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	This is easy. In CFD-Post create a user variable which is u*T. Then use the function calculator to get the area integral of this user variable over the area you define.

June 24, 2011, 16:21		#4
jtipton2 New Member Joseph Tipton Join Date: Jun 2010 Posts: 27 Rep Power: 15	I believe you can also use massFlowAve(Temperature)@<plane name> to achieve the same calculation.