# Boundary details, free slip or no slip?

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

 LinkBack Thread Tools Display Modes
 March 3, 2008, 08:00 Boundary details, free slip or no slip? #1 Tiago Guest   Posts: n/a Hi! In CFX-PRE -- boundary domain- default/Boundary details/ wall influence on flow, there are two options : -No Slip -Free Slip My simulation type is in regime transient. And i am trying to simulate a tank with water inside. I must put No slip or free slip? What is the difference between these parameters? Thanks one more time! Tiago.

 March 3, 2008, 08:58 Re: Boundary details, free slip or no slip? #2 Gen Guest   Posts: n/a No slip I.e. Fluid Velocity=0 on the walls Free slip = no friction between fluid and wall

 March 3, 2008, 09:36 Re: Boundary details, free slip or no slip? #3 Subha Guest   Posts: n/a Hai Tiago, Whether the water in the tank static or Dynamic? Are you doing a open cavity problem? Regards, Subha.

 March 3, 2008, 12:22 Re: Boundary details, free slip or no slip? #4 Tiago Guest   Posts: n/a Hi! the water in the tank is dynamic. And the tank is open in top! Itīs better use no slip?or free slip?

 March 3, 2008, 17:34 Re: Boundary details, free slip or no slip? #5 Glenn Horrocks Guest   Posts: n/a Hi, Almost certainly you want the water phase to be no slip, but for some simulations you may wish the air phase to be free slip so you don't get wall function problems if the air drag is insignificant in the simulation. I think the CFX tutorials talk about this issue. Glenn Horrocks BSquared likes this.

 August 20, 2013, 22:54 free slip boundary condition for gas #6 New Member   mohamad Join Date: Jun 2012 Posts: 12 Rep Power: 5 Hello I study gas- liquid bubble column. and I use free slip boundary condition for gas base on previous study. I want to understand why I have to use this boundary condition for gas. Thank you.

 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 Attesz CFX 7 January 5, 2013 04:32 lei wang FLUENT 0 May 16, 2007 22:47 AlexA FLUENT 1 January 5, 2007 22:30 CFDUSER CFX 2 December 9, 2006 07:31 cfduser CFX 0 April 29, 2006 10:58

All times are GMT -4. The time now is 05:56.

 Contact Us - CFD Online - Top