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

 June 19, 2007, 23:23 "Slip Boundary Condition,Help me Please" #1 Sohag Guest   Posts: n/a I am a new user of CFX. I consider gaseous flow in a 2D microchannel (L=3mm, H =0.0012mm).In this problem I want to use slip boundary conditions: (1) Ug-Uw = Kn*(delU/deln) (2) Tg-Tw = (Kn/Pr)*(delT/deln) where Ug = vel of gas, Uw = vel of wall, Kn = Knudsen number(for slip flow 0.001 < Kn <0.1), n = inward normal direction to the wall, so (delU /deln) and (delT/deln) are the tangential velocity and temperature, Pr = Prandtl number. Are these possible to write using CEL function? But in CEL how (delU/deln) can be written? If not possible then how can I write using FORTRAN subroutine? Please give me directions or give me any sample subroutine that I can write my subroutine. If any one help me I will be grateful to him and appreciate his kindness. Yours Truly Sohag

 June 21, 2007, 06:34 Hi Mr. Opaque and Robin, Plz see my problem!! #2 Sohag Guest   Posts: n/a Dear Opaque and Robin, Both of you are so expert and always try to response to others problems.Would you plz see my problem that I send and give me some instructions that will help me. Yours Truly Sohag

 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 Shafiul CFX 10 February 17, 2011 08:57 hongchun FLUENT 4 July 9, 2010 11:29 normunds OpenFOAM Running, Solving & CFD 2 June 4, 2007 06:45 Mark CFX 6 November 15, 2004 16:55 Rasmus Main CFD Forum 0 June 6, 2002 08:49

All times are GMT -4. The time now is 15:07.