(2) Conservatively discretize in space the 2D nonlinear diffusion equation Əu = V• (D(u)Vu) = d_(D(u)dµu) + dg(D(u)d,u) with second-order accurate central differences with Ax Ay h. Set || Uij u(xi, Y;) and Dij D(u(xi, Y;)). You may use values of u and D at i, i ±, j, j ±. (Keep the time derivative in du-we are deriving the semi-discrete problem here. Then any of our standard timestepping methods for parabolic PDES can be applied.)
(2) Conservatively discretize in space the 2D nonlinear diffusion equation Əu = V• (D(u)Vu) = d_(D(u)dµu) + dg(D(u)d,u) with second-order accurate central differences with Ax Ay h. Set || Uij u(xi, Y;) and Dij D(u(xi, Y;)). You may use values of u and D at i, i ±, j, j ±. (Keep the time derivative in du-we are deriving the semi-discrete problem here. Then any of our standard timestepping methods for parabolic PDES can be applied.)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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