14 Replies Latest reply on Mar 29, 2016 8:27 PM by Jaja Jojo

    Why does my fan efficiency is more than 100%

    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