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torque calculation to find efficiency of fan

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Old   September 29, 2011, 13:13
Default torque calculation to find efficiency of fan
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Hi,
I have used mrf approach to simulate an axial fan and i want to find the efficiency of this fan. To do so I need 4 parameters (i.e del P, vol flow rate, rpm and torque). Can anyone tell, how I can find torque and which surface i should select to measure this torque value ?
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Old   October 1, 2011, 18:12
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Create a moment report. The input surfaces for the report will be all blade surfaces which participate to the moment. Don't forget the rotating parts of the hub (when applicable).
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Old   October 2, 2011, 03:10
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i saw this in ccm and it is working. Thanks a lot friend !!
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Old   September 1, 2015, 08:59
Exclamation 7 blades
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Also ıf ı have seven blades how can ı calculate efficiency?
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Old   September 1, 2015, 12:01
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gozdamar, number of blades is not a parameter for determining fan efficiency.
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Old   September 2, 2015, 03:58
Exclamation blades
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I took only one so that the effıcıency of one blade means all systems efficiency yes?
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