# Convergence problem when use gravity

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 LinkBack Thread Tools Display Modes
 February 18, 2013, 05:31 Convergence problem when use gravity #1 New Member   Hamed Join Date: Jul 2012 Posts: 13 Rep Power: 6 Hi pals, I have a model with gravity and the boundaries should have constant static pressure (not considering the gravity body force). I am trying to model a flow field with specific static pressure boundary faces and gravity. existance of gravity (as a body force) should affect the flow. I tried both "Stagnation Inlet" and "Pressure Outlet" and I used field function below for boundary condition as total pressure. (I should say, I used the correct syntax, I am just explaining the concept here) "static pressure inlet"+ 0.5*Density*V^2 + Density * gravity * distance or "static pressure outlet"+ 0.5*Density*V^2 - Density * gravity * distance in all cases that I have the "gravity" term, my simulation is not getting converge. I really do not know what else should I try. I aapreciate it if anybody can help. Hamed

 April 10, 2013, 10:18 #2 Senior Member     Philipp Join Date: Jun 2011 Location: Germany Posts: 1,297 Rep Power: 19 Hi Aroma, Please post a picture of your domain with some explanations. I have a quite similar problem (in Fluent)... __________________ The skeleton ran out of shampoo in the shower.

 Tags convergence problem, gravity, star ccm, star-ccm+

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post supermouniette FLUENT 10 July 6, 2009 10:47 nasdak CFX 2 June 29, 2009 01:17 anderson Main CFD Forum 0 February 24, 2008 17:54 Emily FLUENT 2 March 21, 2007 23:18 Balraj Main CFD Forum 3 December 9, 2004 01:24

All times are GMT -4. The time now is 21:32.

 Contact Us - CFD Online - Top