CFD Online Logo CFD Online URL
Home > Forums > FLUENT

"CAVITATION" Special Pressure-Corr relaxation!!!

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

LinkBack Thread Tools Display Modes
Old   November 17, 2003, 03:42
Default "CAVITATION" Special Pressure-Corr relaxation!!!
Posts: n/a
Hi; I want to model cloud cavitation arround a simple hydrofoil with Fluent. I work with version 6.1.22 of this software recently. In its documentation there is some guidlines suggested to obtain a converged solution. I begin the solution with a non-cavitating condition and approach slowly to the operating condition. At a non-cavitating condition, when I solve only the flow equations, I obtain a stable converged solution; But in the same condition(non-cavitating i.e. a low velocity or a high pressure) when I add volume fraction equation of cavitation to equations, I do not have a converged stable solution.(the main problem is the "continuity" residue.) Of course this is by defult setting of "pressure limit" or"Termination criteria" or ... Because fluent documentation suggestion, when I type: (rpsetvar,'pressure-correction/relax value) I recieved error: "invalid command[rpsetvar]" Can I set this relaxation in solution pannel? Where I should type this correctly? Thanks.
  Reply With Quote

Old   November 17, 2003, 07:29
Default Re: "CAVITATION" Special Pressure-Corr relaxation!
Posts: n/a
(rpsetvar,'pressure-correction/relax value)

That's a mistake: the "," behind "rpsetvar" has to be omitted. Try (rpsetvar 'pressure-correction/relax 0.4) That should work.
  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
Pulsatile pressure inlet with pressure outlet a.lynchy FLUENT 3 March 23, 2012 14:45
Boundary Conditions : Total Pressure or Velocity Gearb0x OpenFOAM Running, Solving & CFD 2 February 28, 2011 22:18
Operating condition in Fluent MASOUD FLUENT 3 September 16, 2010 17:50
How to read pressure at discrete points paka OpenFOAM 15 July 21, 2008 05:03
Hydrostatic pressure in 2-phase flow modeling (CFX4.2) HB &DS CFX 0 January 9, 2000 14:19

All times are GMT -4. The time now is 13:54.