CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

simulation of centrifugal impeller

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 20, 2007, 04:02
Default simulation of centrifugal impeller
  #1
Txema
Guest
 
Posts: n/a
I'm simulating a centrifugal impeller. I put:
*Inlet = mass flow inelet
*Outlet= outlet pressure
*air with constant density
After 150 iterations the simulation starts to become instable.
How can I improve convergence??
Txema
  Reply With Quote

Old   February 23, 2007, 02:08
Default Re: simulation of centrifugal impeller
  #2
Hossein
Guest
 
Posts: n/a
Hi! I think you must reduce under relaxation factor of Turb. kinetic energy and Turb. dissipation energy to 0.6 and use second order upwind method for momentum,Turb. kinetic energy and Turb. dissipation energy...it's better to use velocity-inlet B.C. instead of mass flow inlet B.C.

  Reply With Quote

Reply

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
Simulation of an Axial Impeller cnchilavert CFX 1 October 15, 2011 02:01
Inducer+centrifugal impeller marcelvduarte FLUENT 1 October 11, 2011 00:45
[ICEM] Meshing Centrifugal Impeller Bellmo ANSYS Meshing & Geometry 3 May 26, 2011 16:34
[ICEM] Meshing a centrifugal compressor impeller Mitpostdoc ANSYS Meshing & Geometry 8 February 25, 2011 11:51
TASCflow - Impeller Simulation Centaur_ks CFX 2 May 27, 2003 12:02


All times are GMT -4. The time now is 06:49.