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Old   March 23, 2011, 11:47
Default TDMA in Matlab
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zamet
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hi everyone i m studying the computational fluid dynamics book of VERSTEEG AND MALALASEKERA i am trying to write a code i matlab that will generate the equations in example 4.2 page 92 can anyone help me with solving tridiagonal matrix in matlab
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Old   March 26, 2011, 15:23
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Artem Shaklein
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Hello, zamet63.

What exactly you need? You have some troubles with interpretation tdma or matlab syntax? Or you want to fill matrices A & b (from equation Ax = b) with necessary coefficients?

Artem.
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Old   April 17, 2011, 17:29
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aidin zarif
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Quote:
Originally Posted by zamet63 View Post
hi everyone i m studying the computational fluid dynamics book of VERSTEEG AND MALALASEKERA i am trying to write a code i matlab that will generate the equations in example 4.2 page 92 can anyone help me with solving tridiagonal matrix in matlab
Hi
you're joking!!!!!!!!!!!!!
it's easy!!!!!!!!!!!!!
go to chapter 7
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Old   May 4, 2011, 07:37
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zamet
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i dont need the solutions i need a fortran or matlab code that will solve it i mean i dont want solving by hand i want solving with computer
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Old   May 4, 2011, 08:31
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Try to use some of the Matlab specialized functions for solving tri-diagonal systems (use spdiags to generate your sparse matrix and simply solve this with the slash operator).

Or ... use Google to find this link (you have C, Matlab and Fortran implementations of TDMA here):

http://en.wikipedia.org/wiki/Tridiag...trix_algorithm

Do
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