"flow heat fluxes (Resolved UT/VT/WT Heat Flux)"

Svetlana · December 2, 2018, 22:30

https://www.sharcnet.ca/Software/Ans...0013.18.2.html says "The statistics that ANSYS Fluent collects at each sampling interval can be postprocessed by selecting Unsteady Statistics... [including] shear stresses (Resolved UV/UW/VW Reynolds Stress), flow heat fluxes (Resolved UT/VT/WT Heat Flux), and species statistics (RMSE Mass Fraction of species and Mean Mass Fraction of species)."

What is Resolved UT heat flux? Time-averaged u'T' or time-averaged uT?

Where can I read of this material with the relevant formulas and vocabulary in a textbook?

Thank you in advance.

LuckyTran · December 3, 2018, 00:23

It's the time-averaged u'T'. You won't find these definitions in any book because they are Fluent specific. You can however, find the general concepts of UT heat flux in any book on turbulent convective heat transfer.

Svetlana · December 3, 2018, 00:48

Thanks for this information, LuckyTran.

The Fluent theory guide does not seem to have this information.

December 2, 2018, 22:30	"flow heat fluxes (Resolved UT/VT/WT Heat Flux)"	#1
Svetlana Senior Member Svetlana Tkachenko Join Date: Oct 2013 Location: Australia, Sydney Posts: 416 Rep Power: 15	https://www.sharcnet.ca/Software/Ans...0013.18.2.html says "The statistics that ANSYS Fluent collects at each sampling interval can be postprocessed by selecting Unsteady Statistics... [including] shear stresses (Resolved UV/UW/VW Reynolds Stress), flow heat fluxes (Resolved UT/VT/WT Heat Flux), and species statistics (RMSE Mass Fraction of species and Mean Mass Fraction of species)." What is Resolved UT heat flux? Time-averaged u'T' or time-averaged uT? Where can I read of this material with the relevant formulas and vocabulary in a textbook? Thank you in advance.

December 3, 2018, 00:23		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,751 Rep Power: 66	It's the time-averaged u'T'. You won't find these definitions in any book because they are Fluent specific. You can however, find the general concepts of UT heat flux in any book on turbulent convective heat transfer. Svetlana likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Constant velocity of the material	Sas	CFX	15	July 13, 2010 09:56
UDF access wall heat fluxes cid[]	icaro	FLUENT	0	December 4, 2009 05:42
Convective / Conductive Heat Transfer in Hypersonic flows	enigma	Main CFD Forum	2	November 1, 2009 23:53
Heat fluxes seems the same direction ? :(	Cagdas	FLUENT	0	July 21, 2007 08:36
Convective Heat Transfer - Heat Exchanger	Mark	CFX	6	November 15, 2004 16:55

December 3, 2018, 00:48		#3
Svetlana Senior Member Svetlana Tkachenko Join Date: Oct 2013 Location: Australia, Sydney Posts: 416 Rep Power: 15	Thanks for this information, LuckyTran. The Fluent theory guide does not seem to have this information.