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Why does my fan efficiency is more than 100%

Question asked by Jaja Jojo on Mar 23, 2016
Latest reply on Mar 29, 2016 by Jaja Jojo

I modeled a fan and try to use flow simulation so i followed the solidworks 2012 flow simulation tutorials

then i try to calculate the efficiency but the result is more than a 100% i attached the value i obtained and the fan picture.

 

the efficiency formula that i use is :

Pressure drop = (Av inlet Static Pressure)-(Bulk Av Static Pressure)

 

Efficiency =  (Pressure Drop)*(Inlet Volume Flow)/(Torque on Impeller)

 

Is my formula is wrong?

Thanks in advanced.Capture2.PNGCapture.PNG

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