CFD Online Logo CFD Online URL
Home > Forums > CFX

Help: gravity in CFX

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

LinkBack Thread Tools Display Modes
Old   July 18, 2002, 10:26
Default Help: gravity in CFX
Dejun Jing
Posts: n/a

I am modeling fine powders flowing out of a hopper under gravity. I set the axis of the hopper along Z direction, which means that the gravity force is along Z direction.

My results shows that the powders stay still inside the hopper, so this means no gravity acts on the powder. I can not find how to prescribe the gravity. Also, I find that the momentum equation in the Manual does not include a body force (gravity) term.

Can you tell me how to include gravitational effect in the simulation?

Thank you very much for your help.

  Reply With Quote

Old   July 20, 2002, 01:11
Default Re: Help: gravity in CFX
Posts: n/a
Hi. You may set it under the keyword: "buoyance parameters", like 0 0 9.8. or use USRBF to set body forces.
  Reply With Quote

Old   July 22, 2002, 08:58
Default Re: Help: gravity in CFX
Posts: n/a
  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
Electronics Enclosure Analysis with CFX Simulation Engineer CFX 1 April 22, 2009 11:08
RE: Applying forces / Center of Gravity in CFX Janusz CFX 1 November 16, 2008 20:37
Considering Gravity effect(or Hydradynamic) in CFX klarke CFX 7 October 2, 2006 03:53
CFX 10's solutions differ from CFX 5.7's Atit Koonsrisuk CFX 4 July 26, 2006 11:59
CFX 4.4 installation problem Pandu Sattvika CFX 1 December 1, 2001 05:07

All times are GMT -4. The time now is 12:32.