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How to define hydraulic or total efficiency in a centrifugal pump?

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Old   February 28, 2012, 15:53
Default How to define hydraulic or total efficiency in a centrifugal pump?
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spk
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Hi guys,

I simulate a 3d centrifugal pump using Fluent.
How can i define the hydraulic efficiency?
Or the total efficiency? The moment of the pump can be calculated?

Thanks
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Old   February 28, 2012, 17:24
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Total pump efficiency = ρgQH/M2πn

ρ=water density
g=gravitational accelaration
Q=flow rate
H=total head
M=moment
π=3.14
n=rotational speed

The moment can be calculated Report-> Forces-> Moments?
I chose moment center and the zone of the rotating impeller. Moment center is the center of the impeller?
The result is the total net moment? Fluent prints 3 values of the moment x, y, z. What can i do to obtain the final value of the moment in order to calculate pump efficiency? I just sum the three moments taking into consideration the positive and negatie signs?

Lastly, i use the MRF model.

Last edited by spk; February 28, 2012 at 17:46.
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Old   March 4, 2012, 05:14
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a.farid
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hi can yo tell me about the meshing tool
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Old   March 4, 2012, 05:18
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hi farid what is your meshing program
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Old   March 5, 2012, 09:40
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Hi,

I use Gambit.
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Old   March 6, 2012, 02:54
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may i have a tutorial how to model a centrifugal pump with three zones inlet, outlet and impeller
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Old   March 16, 2012, 07:32
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Any ideas?
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Old   March 17, 2012, 04:53
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Hi,

I need any tutorial to start meshing a centrifugal pump by gambit
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Old   March 17, 2012, 09:27
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I don't have any tutorial in order to mesh a centrifugal pump! You can read the fluent tutorials about meshing in general!
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Old   March 18, 2012, 01:57
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Hi,
thank you for help
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Old   March 28, 2012, 19:03
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Any ideas please!!!
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Old   March 29, 2012, 05:36
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Hi,

send your e mail to me and i will send you a paper apout how to define efficiency
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