The efficiency monitor of a radial turbine

Ahmed Saeed Mansour · February 8, 2017, 21:26

Hello, how can I show the device efficiency from in CFX..I have a choice of the efficiency of the expansion and compression but I want the monitor like the picture.
Thanks

mo-ca · February 9, 2017, 12:14

Sorry to ask, but what device efficiency are you aiming at? Why not build up a CEL variable with your parameters and monitor it?

Ahmed Saeed Mansour · February 9, 2017, 12:31

Quote:

Originally Posted by mo-ca

Sorry to ask, but what device efficiency are you aiming at? Why not build up a CEL variable with your parameters and monitor it?

It is a radial turbine but I cannot find an accurate expression for the efficiency, could you help me please?
Thanks

mo-ca · February 9, 2017, 12:39

Well, this isn't really a cfx problem.

In your case, perhaps it would make sense to include something like a isentropic effiency by simply dividing the Enthalpy differences?!

Or take a look at:https://www.google.de/url?q=https://...Mn_eAIBv1iuueg

Ahmed Saeed Mansour · February 9, 2017, 20:35

Thanks

..The question is how to get the non-isentropic enthalpy from CFX to calculate the efficiency?
Thanks

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February 9, 2017, 12:14		#2
mo-ca New Member Join Date: Aug 2013 Posts: 23 Rep Power: 13	Sorry to ask, but what device efficiency are you aiming at? Why not build up a CEL variable with your parameters and monitor it?

February 9, 2017, 12:39		#4
mo-ca New Member Join Date: Aug 2013 Posts: 23 Rep Power: 13	Well, this isn't really a cfx problem. In your case, perhaps it would make sense to include something like a isentropic effiency by simply dividing the Enthalpy differences?! Or take a look at:https://www.google.de/url?q=https://...Mn_eAIBv1iuueg

February 9, 2017, 20:35		#5
Ahmed Saeed Mansour Senior Member Have a nice time! Join Date: Feb 2016 Location: mech.eng.ahmedmansour@gmail.com Posts: 291 Rep Power: 11	Thanks ..The question is how to get the non-isentropic enthalpy from CFX to calculate the efficiency? Thanks