Problem Definition :Cavitation in Francis Turbine

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 May 12, 2008, 02:46 Problem Definition :Cavitation in Francis Turbine #1 Amit Roghs Guest   Posts: n/a I want to define cavitation in francis turbine. I am using the Rayleigh Plesset method, but am not aware of what value to feed for Saturation Pressure. I would like to know what CFX understands with Saturation Pressure & what should be its value. Regards, Amit Roghs

 May 13, 2008, 04:55 Re: Problem Definition :Cavitation in Francis Turb #2 dia aisa Guest   Posts: n/a hi please chich the tutorial in ANSYS - cfx to know how u can set your pressure,the tutorial in cfx help- tutorial

 May 14, 2008, 01:43 Re: Problem Definition :Cavitation in Francis Turb #3 Amit Roghs Guest   Posts: n/a I have checked up but there is no information regarding mentioning saturation pressure.

 May 14, 2008, 13:48 Re: Problem Definition :Cavitation in Francis Turb #4 UnderwaterAlex Guest   Posts: n/a Tutorial 19 - Cavitation around a hydrofoil: Under "Preparing a simulation with cavitation" - "Adding cavitation." Saturation pressure for Water/Water Vapor @ 25 C = 3574 Pa That's all the info I have. Best of luck, -Alex

 May 26, 2008, 04:33 Re: Problem Definition :Cavitation in Francis Turb #5 Amit Roghs Guest   Posts: n/a Dear Alex, Thanks for the response, but how to reduce the value pressure at outlet, due to which cavitation incepts. I am still not understanding what saturation pressure means? Is it the pressure at which water vapour oozes out of water? Regards, Amit

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