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Total Enthalpy does not equal Cp*Total Temperature |
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December 16, 2019, 00:39 |
Total Enthalpy does not equal Cp*Total Temperature
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#1 |
Senior Member
Sasan Ghomi
Join Date: Sep 2012
Location: Denmark
Posts: 292
Rep Power: 14 |
Hey,
Does anybody have an idea about the difference between Total Enthalpy and (Specific Heat Capacity at Constant Pressure * Total Temperature) ? In fact, these parameters are supposed to have the same values but I have seen many cases that CFD Post shows different values for these parameters at a specific plane, for example!! What is the source of this discrepancy? BR Sasan Ghomi |
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December 16, 2019, 08:44 |
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#2 |
Senior Member
Join Date: Jun 2009
Posts: 1,815
Rep Power: 32 |
Have you done such comparison on a locator which does not require CFD-Post manipulation of the data?
Say Minimum and Maximum value of both variables? Say a boundary plot of both quantities, if you switch the plotted variable from Total Enthalpy to Total Temperature the plot should be identical except a variable range change. |
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December 18, 2019, 07:06 |
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#3 |
Senior Member
Sasan Ghomi
Join Date: Sep 2012
Location: Denmark
Posts: 292
Rep Power: 14 |
I am talking about the difference at a specific plane. In fact, I used massFlowAve() function in order to calculate the values.
It is strange to me that what could be the source of the difference!! |
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December 18, 2019, 08:06 |
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#4 |
Senior Member
Join Date: Jun 2009
Posts: 1,815
Rep Power: 32 |
Did you do the check as suggested above?
What is the outcome of the check suggested above? |
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