Implicit Diffusion and the Thomas Algorithm — Buying Stability with One Tridiagonal Solve
·6 min read
At r=0.6 explicit diffusion reaches 1e12 in 60 steps. One Thomas sweep keeps the implicit update finite at that same r, and still finite at r=2.
At r=0.6 explicit diffusion reaches 1e12 in 60 steps. One Thomas sweep keeps the implicit update finite at that same r, and still finite at r=2.