Can someone explain how to solve a two dimensional tdma problem?
You will find the algorithm for TDMA in a few books:
J. D. Anderson - Introduction to CFD
Tletcher - Computational Techniques for Fluid Dynamics
and obviously Wikipedia (even with an implementation example):
here you will see how to use TDMA to solve a linear equation line by line:
I think what you want is algorithm for block tridiagonal system. You should look into blktri method of fishpack.
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