# Free slip in CFX??

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

 April 3, 2008, 12:14 Free slip in CFX?? #1 Vijay Guest   Posts: n/a Sponsored Links Dear friends, What is meant by "Free slip" in cfx?? how it differs from "no slip" condition?? PLZ reply.. Thanks in advance..

 April 3, 2008, 12:35 Re: Free slip in CFX?? #2 andy2O Guest   Posts: n/a This is fundamental to fluid dynamics.... If this is not familiar to you I suggest you stop doing CFD work for a while and read a good book about viscous flow! No slip -> Fluid velocity = 0 at stationary boundary. This is the usual condition for viscous flow at a wall. Free slip -> Normal component of fluid velocity = 0 at stationary boundary. Tangential component of velocity can have any value. The extension to moving boundaries is obvious: you consider velocity relative to the boundary and apply the rules above. HTH, Andy.

 April 3, 2008, 14:12 Re: Free slip in CFX?? #3 J Guest   Posts: n/a Hi, normally a no-slip condition is used in viscous flow calculation. If u are simulating a non-viscous fluid (for example an Euler flow) at the boundary u have that the fluid velocity is not zero. Anyway also in case of viscous flow u can have a slip boundary condition, for example in rarefied flow (e.g. high altitudes...)... ok? cheers J

 April 7, 2008, 04:53 Re: Free slip in CFX?? #4 Vijay Guest   Posts: n/a Thanks friends...

 August 20, 2013, 23:34 free slip boundary condition for gas #5 New Member   mohamad Join Date: Jun 2012 Posts: 12 Rep Power: 7 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 Val Main CFD Forum 3 June 10, 2011 02:20 Yang Main CFD Forum 8 May 22, 2011 22:14 nasdak CFX 1 April 14, 2010 13:22 Rui CFX 9 May 28, 2007 05:59 ANSYS CFX Marketing CFX 0 October 6, 2003 11:14