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is it necessary to multiply by number of blades with moment to calculate the power?

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Old   November 16, 2013, 05:48
Default is it necessary to multiply by number of blades with moment to calculate the power?
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ijaz fazil
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Hi
I have done the simulation of wind turbine using MRF analyis. I have not done any symmetric analysis. I have done whole blade simluation. But when I calculated power, it is half the value. My friends suggested that I should multiply by number of blades to calculate the power from moment value?
Is it so?
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Old   November 16, 2013, 08:35
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Daniele
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Hi,
if you simulated the whole 3d model you have not to multiply by the number of blades; you have to multiply only if you do periodic simulations.

Daniele
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Old   November 16, 2013, 19:04
Default Hi, then do u have an idea where i'm going wrong
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Hi
I run two simulations one fo 7 m/s and another for 10 m/s. In both cases my power is half of the experimental.

I think I have a problem with direction of rotation. I have a doubt while using thumb rule, index finger should be pointed from inlet to the blade or the index figer should point from blade to inlet
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