CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CFX

Problem Definition :Cavitation in Francis Turbine

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   May 12, 2008, 02:46
Default 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
  Reply With Quote

Old   May 13, 2008, 04:55
Default 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
  Reply With Quote

Old   May 14, 2008, 01:43
Default 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.
  Reply With Quote

Old   May 14, 2008, 13:48
Default 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
  Reply With Quote

Old   May 26, 2008, 04:33
Default 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
  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
CFD analysis on wind turbine rotor Ken (Wind Turbine CFD Super Rookie) Main CFD Forum 45 February 9, 2016 15:07
Francis turbine analysis hasantalha14 ANSYS 1 September 13, 2012 04:06
OpenFOAM static build on Cray XT5 asaijo OpenFOAM Installation 9 April 6, 2011 12:21
wind turbine simulation problem dennis0131 Main CFD Forum 4 November 22, 2010 05:26
How to calculate Torque for francis turbine manish CFX 4 March 15, 2007 03:57


All times are GMT -4. The time now is 05:43.