# need a standard velocity and pressure distribution

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

 August 8, 2003, 03:46 need a standard velocity and pressure distribution #1 tommewang Guest   Posts: n/a hi,everybody. My own fem code has caled such a poisson problem succesfully. and now I want to use it as my pressure poisson equations solver. I need a stand veloctiy and pressure distribution at a certain time as my references. Can any bode being successful in the calculation of lid driven flow in a square cavity by using quad element can send me one copy? thank you very much and if you can please help me. this is the poison example I caled rightly: d2T d2T ---- + ---- = 0 dx2 dy2 For a 2D system reference (x,y) with dimensions W x H you can set for BC: T = T1 for y = 0 (T1 can be any value, say, 30 oC) T = T1 for x =0 T = T1 for x =W T = Tm sen(pi.x) + T1 for y = H ---- (W) The exact solution (analitic) for a given node (x,y) is given by T = Tm senh(pi y/W) sen(pi x/W) + T1 ------------- senh(pi H/W)

 August 9, 2003, 10:41 Re: need a standard velocity and pressure distribu #2 tommewang Guest   Posts: n/a oh.sorry, the example expression have strange form here. I write again: d/dx(dt/dx)+d/dy(dt/dy)=0. for a square domain with unit length: t=t1 when x=0,x=1,y=0 t=tm*sin(pi*x)+t1 analytic answer according to JP Holman: t(x,y)=tm*sinh(pi*x)*sin(pi*y)/sinh(pi)+t1 as pi=3.1415926

 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 Morten Andersen CFX 1 January 8, 2007 12:37 Antech Main CFD Forum 0 April 25, 2006 02:15 R P CFX 2 October 26, 2004 02:13 Abhi Main CFD Forum 12 July 8, 2002 09:11 chong chee nan FLUENT 0 December 29, 2001 06:13

All times are GMT -4. The time now is 14:21.