CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Cavitation "Very High Velocity in the Cavity Core"

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

LinkBack Thread Tools Display Modes
Old   December 1, 2003, 03:35
Default Cavitation "Very High Velocity in the Cavity Core"
Posts: n/a
Hi all;

I want to moldel an unsteady cloud cavitatioin on a simple hydrofoil by Fluent6.1.22. I begin with a high outlet pressure corresponding to a non-cavitatind condition and then decrease the pressure to reach my operating condition. At this point when cavitation occur (this is done with very good convergency and results), after some time steps the velocity value in the core of cavity locally become high(100 m\s). And at the same point also turbulent kinetic energy! Of course I must apply the Reboud's recomendation of modifying turbulence viscosity in cavitation region for cloud cavitation. I did not do this until now. Should I change termination criteria for momentum and turbulence, like pressure and VOF equation?

Please guid me.

  Reply With Quote

Old   December 1, 2003, 08:31
Default Re: Cavitation "Very High Velocity in the Cavity C
Posts: n/a

Just you get cavitation cloud separation without the modification of turbulent viscosity?


  Reply With Quote


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
Neumann pressure BC and velocity field Antech Main CFD Forum 0 April 25, 2006 02:15
Velocity Under-relaxation in SIMPLE type methods Matt U. Main CFD Forum 6 July 4, 2005 05:29
Multicomponent fluid Andrea CFX 2 October 11, 2004 05:12
high velocity problem Kirill CFX 1 July 23, 2003 11:21
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11

All times are GMT -4. The time now is 09:08.