Mk. Jain et al., 4TH-ORDER DIFFERENCE METHOD FOR QUASI-LINEAR POISSON EQUATION IN CYLINDRICAL SYMMETRY, Communications in numerical methods in engineering, 10(4), 1994, pp. 291-296
We propose in this paper a nine-point, fourth-order difference method
for the numerical solution of the quasilinear Poisson equation Au(zz)
+ 1/r u(r) + Bu(rr) = f(r, z, u, u(r), u(z)) with appropriate boundary
conditions. The method is based on five evaluations of f. The numeric
al results of four problems obtained using this method are listed. The
results demonstrate the fourth-order accuracy of the method.