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

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 February 28, 2012, 15:53 How to define hydraulic or total efficiency in a centrifugal pump? #1 Member   Join Date: Aug 2009 Posts: 67 Rep Power: 9 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

 February 28, 2012, 17:24 #2 Member   Join Date: Aug 2009 Posts: 67 Rep Power: 9 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.

 March 4, 2012, 05:14 #3 New Member   a.farid Join Date: Feb 2012 Posts: 14 Rep Power: 6 hi can yo tell me about the meshing tool

 March 4, 2012, 05:18 #4 New Member   a.farid Join Date: Feb 2012 Posts: 14 Rep Power: 6 hi farid what is your meshing program

 March 5, 2012, 09:40 #5 Member   Join Date: Aug 2009 Posts: 67 Rep Power: 9 Hi, I use Gambit.

 March 6, 2012, 02:54 #6 New Member   a.farid Join Date: Feb 2012 Posts: 14 Rep Power: 6 may i have a tutorial how to model a centrifugal pump with three zones inlet, outlet and impeller

 March 16, 2012, 07:32 #7 Member   Join Date: Aug 2009 Posts: 67 Rep Power: 9 Any ideas?

 March 17, 2012, 04:53 #8 New Member   a.farid Join Date: Feb 2012 Posts: 14 Rep Power: 6 Hi, I need any tutorial to start meshing a centrifugal pump by gambit

 March 17, 2012, 09:27 #9 Member   Join Date: Aug 2009 Posts: 67 Rep Power: 9 I don't have any tutorial in order to mesh a centrifugal pump! You can read the fluent tutorials about meshing in general!

 March 18, 2012, 01:57 #10 New Member   a.farid Join Date: Feb 2012 Posts: 14 Rep Power: 6 Hi, thank you for help

 March 28, 2012, 19:03 #11 Member   Join Date: Aug 2009 Posts: 67 Rep Power: 9 Any ideas please!!!

 March 29, 2012, 05:36 #12 New Member   a.farid Join Date: Feb 2012 Posts: 14 Rep Power: 6 Hi, send your e mail to me and i will send you a paper apout how to define efficiency

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