# Periodic Block Tridiagonl System

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

 February 26, 2001, 23:27 Periodic Block Tridiagonl System #1 A.M.Yang Guest   Posts: n/a Hi, Can you tell me where I can get the knowledge of the solution of Periodic Block Tridiagonl System of equations? Thank you! A.M.Yang 02/27/01

 February 27, 2001, 05:11 Re: Periodic Block Tridiagonl System #2 sylvain Guest   Posts: n/a Try the numerical recipes home page : www.nr.com you should find something there.

 February 27, 2001, 06:07 Re: Periodic Block Tridiagonl System #3 M. Barbaro Guest   Posts: n/a Try this book: Anderson, Tannehill, Pletcher COMPUTATIONAL FLUID MECHANICS AND HEAT TRANSFER, Hemisphere Publishing Corporation(1984),p.551 Regards

 February 27, 2001, 08:26 Re: Periodic Block Tridiagonl System #4 A.M.Yang Guest   Posts: n/a Dear Mr.Barbaro,M: Thank you for your advice. The Book of Anderson is at my hand, but the program seems erroneous. Regards A.M.Yang 02/27/2001

 February 27, 2001, 08:28 Thank You! #5 A.M.Yang Guest   Posts: n/a Dear Mr. Sylvain: Thank you for your advice! Regards A.M.Yang 02/27/2001

 February 27, 2001, 10:59 Re: Periodic Block Tridiagonl System #6 andy Guest   Posts: n/a I had the same problem a few years ago. It was not in my copy of Numerical Recipes (1986) but may be in a newer version (?). An approach is as follows (I never found a reference): Write down the matrix problem. Pull out the last equation for Xn to leave a tridiagonal system. Split the unknown x into the sum of two parts: x = f + Xn*g. Solve two TDMA problems for f and g (g gets the Xn*A terms to divide out Xn and the f the rest). Use Xn equation to get Xn. Evaluate x from f and g.

 February 27, 2001, 23:22 Re: Periodic Block Tridiagonl System #7 A.M.Yang Guest   Posts: n/a Dear Andy: Thank you for your advice! Regards A.M.Yang

 February 28, 2001, 22:46 Re: Periodic Block Tridiagonl System #8 A.M.Yang Guest   Posts: n/a Dear Andy: Can you give me the process in detail? Thank you very much! Regards A.M.Yang (aimingyang@263.net)

 March 1, 2001, 07:31 Re: Periodic Block Tridiagonl System #9 andy Guest   Posts: n/a A reference has been pointed out to me. Fortran code is contained in an appendix of Volume 1 of Hirsch's book. My original source was a proprietary routine from the 1970s. They have coding similarities which suggests it is in a numerical library somewhere or, perhaps, it is just one of those routines that has been passed among Ph.D. students since the dawn of time. Digging about on netlib is likely to be fruitful. However, I had missed the word "block" on the first reading of your question so it may not be want you want anyway.

 March 1, 2001, 09:26 Re: Periodic Block Tridiagonl System #10 A.M.Yang Guest   Posts: n/a Dear Andy: Thank you very much ! Regards A.M.Yang

 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 Mohan CFX 20 March 30, 2011 18:56 jphandrigan OpenFOAM Mesh Utilities 4 March 9, 2010 03:58 Abullah Main CFD Forum 2 November 22, 2007 01:21 Abdullah Main CFD Forum 8 February 23, 2007 14:15 Munikrishna Main CFD Forum 0 November 19, 2006 02:00

All times are GMT -4. The time now is 13:52.