CFD Online Logo CFD Online URL
Home > Forums > CFX

stirred vessel

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

LinkBack Thread Tools Display Modes
Old   June 14, 2012, 16:03
Default stirred vessel
New Member
Join Date: May 2012
Posts: 1
Rep Power: 0
francescov is on a distinguished road
hi all,
i'm new with cfx and i'm trying to simulate a multiphase liquid-liquid stirred tank.
i began with a simple single phase model, but the solver fails because it finds a non zero normal component of the velocity of the rotating mixer shaft. this is due, I think, to the low quality triangular mesh of the shaft itself, which doesn't reproduce the curvature of the cylindrical element. Is there any mesh method to overcome this problem? i tried to convert the 3 node surface tri element with a 6 node surface element, but it seems that ICEM can't generate the volume mesh elements.
I've attached the icem cfd file.
Anyone can help me?

Best Regards,

francescov is offline   Reply With Quote

Old   June 14, 2012, 19:15
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 14,088
Rep Power: 109
ghorrocks is a jewel in the roughghorrocks is a jewel in the roughghorrocks is a jewel in the roughghorrocks is a jewel in the rough
Is there any mesh method to overcome this problem?
Isn't that obvious? You need to improve mesh quality. Specifically you need a finer mesh which resolves the shape better.

CFX (or just about any other CFD solver) cannot use "high order elements" like FEA does, so forget about the 6 node surface elements. Finite volume CFD solvers put the high order numerics in the discretisation scheme, not the element formulation.
ghorrocks is offline   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
anyone simulated problem of Stirred Vessel using STAR-Design @ STAR-CCM+? Miqi Cornholio Siemens 0 August 19, 2009 21:19
stirred vessel simulation selvam R.P CFX 0 December 23, 2005 09:16
Mesh problems for a stirred vessel with baffles! UY CFX 0 September 14, 2005 10:19
Tracer problem in stirred vessel UW CFX 0 July 25, 2005 22:23
CFD-simulation of a stirred vessel Peter FLUENT 5 February 1, 2000 06:51

All times are GMT -4. The time now is 05:03.