CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

convergence problem with FLUENT cavitation model

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

LinkBack Thread Tools Search this Thread Display Modes
Old   February 16, 2006, 09:01
Default convergence problem with FLUENT cavitation model
Belete Kiflie
Posts: n/a
Dear all,

I am using the full cavitation model implemented in FLUENT to do simulation of cavitation problems in an axial pump. I had generated a mesh of 1.1 millions. I used this mesh to simulate the flow with fluent using all the three k-e turbulence models (standard, realizable and rng). The calculation converged well and the solution appeared good. Then, I wanted to start solving the cavitation problem. But this time, it appears that the convergence stuck...but it appears the solution is not improve the convergence, i tried to lower the URF for vf but the residue jumps to a lower value at the biginning but then it stucks immediately after....can you help?

With best regards
  Reply With Quote

Old   February 18, 2006, 02:04
Default Re: convergence problem with FLUENT cavitation mod
Posts: n/a
Dear B.kiflie I would like to simulate cavitation on marine propeller. But i in confuse that if it(Fluent) can do it?

can you help me?

Best regards R.Arazgaldy
  Reply With Quote

Old   February 18, 2006, 05:53
Default Re: convergence problem with FLUENT cavitation mod
B. Kiflie
Posts: n/a
Hi R. Arazgaldy,

I am also trying to use FLUENT for solving cavitation problem on an axial pump...the cav. model implemented in FLUENT is one of the most accepted model. It is called FULL Cavitation has been also reported in different papers about its applicability...that was I was encouraged to start using it...but for the time being i have some problem regarding convergence issues as I posted it earlier to which I am looking for advice...but the initial results i got are promissing...
  Reply With Quote

Old   February 20, 2006, 10:16
Default Re: convergence problem with FLUENT cavitation mod
Posts: n/a
Hi,B. Kiflie

I'm also using fluent to simulate cavitating flow in axial pump.Would you please send me some of your good results? And I don't clear where and how to set the operate pressure.
  Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Integration of a Custom C++ Model into FLUENT Syed Haider FLUENT 2 March 6, 2018 23:37
problem with UDF for (v2-f) turbulence model in fluent artemiss1984 Fluent UDF and Scheme Programming 6 January 17, 2014 05:50
How can FLUENT be used to model a transient problem with changing geometry? Fascal FLUENT 0 June 30, 2010 15:21
Submerged fin, Convergence problem supermouniette FLUENT 10 July 6, 2009 10:47
FLUENT cavitation model CFDtoy FLUENT 4 October 15, 2008 10:31

All times are GMT -4. The time now is 18:00.