# How to get the temperature gradient in CFX post

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 August 7, 2008, 15:32 How to get the temperature gradient in CFX post #1 Jay Guest   Posts: n/a In order to calculate the entropy, I need to get the temperature gradient and velocity gradient, how can I get the temperature gradient easily from the CFX-post? thanks

 August 9, 2008, 15:35 Re: How to get the temperature gradient in CFX pos #2 CycLone Guest   Posts: n/a The gradient is calculated by the solver, as is entropy etc. Entropy should already be in your results file, but if the gradient isn't you may need to turn on "output variable operators" in CFX-Pre under the Output Control panel. -CycLone

 August 9, 2008, 20:51 Re: How to get the temperature gradient in CFX pos #3 Jay Guest   Posts: n/a Yeah, I can get the Entropy, but what I want is the entropy generation in unit volume, so I need the temperature gradient. anyone has an idea, thanks

 November 15, 2012, 12:23 #4 Member   Join Date: Apr 2010 Posts: 61 Rep Power: 8 I found this post looking for the same question. I solved it in the "Variables" tab of CFD-Post with: -right click on "Derived" -Method => Gradient -Gradient of => Temperature davide and Shabi1992 like this.

January 7, 2015, 04:23
#5
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duan derong
Join Date: Oct 2014
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Quote:
 Originally Posted by alquimista I found this post looking for the same question. I solved it in the "Variables" tab of CFD-Post with: -right click on "Derived" -Method => Gradient -Gradient of => Temperature
hi,alquimista
i solved it by dividing the static enthalpy gradient by Cp of water,i compare the two method u and my,the deviation is too large.
i dont know how to choose.

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