CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

simulation of stirred tanks

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

LinkBack Thread Tools Display Modes
Old   February 21, 2001, 12:50
Default simulation of stirred tanks
Posts: n/a
Hi, everybody,

I intend to simulate a stirred tank with Rushton-impellers using a snapshot method proposed by prof.Ranade. Has anyone tried this method?

He thought the mass sink Sm=-Rho * Abc * Wbc ( Abc and Wbc are the area of the computation cell adjacent to the back side of the blade and rotational velocity of blade respetively) and mass source Sm1= - Sm for the compuatation cell adjacent to the front side of the blade, which means Wbc = Omega * r ( r is the radius of the computation cell). However when I add the mass source and sink into the pressure equation, (by su=su+sm) and I add the corrosponding source terms and sink terms into the momentum equations ( by su=su+sm*phi, phi is U, V, W velocities of the last iteration). However, I found the results are not reasonable because all velocity components are greater than the experiment data (the maximum velocity is 9.0Utip).

Who can tell me what's wrong?

Thanks in advance.
  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
GUI crash and simulation engine still running RPJones FLOW-3D 2 November 9, 2010 09:18
Regarding the two domains in the simulation of stirred tank commonyue Main CFD Forum 0 November 2, 2010 08:13
velocity profile export from a simulation onto another sudhirlv STAR-CCM+ 1 September 12, 2010 18:57
simulation of a stirred tank hu CFX 0 February 17, 2001 08:23
Stirred tank with baffles simulation using single rotating reference frame M.Zhou FLUENT 1 March 5, 2000 16:01

All times are GMT -4. The time now is 05:06.