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Zbl 1071.65113
Mohanty, R.K.
A family of variable mesh methods for the estimates of (d$u$/d$r$) and solution of non-linear two point boundary value problems with singularity. (English)
[J] J. Comput. Appl. Math. 182, No. 1, 173-187 (2005). ISSN 0377-0427

Summary: Using three grid points, we discuss variable mesh methods of order two and three for the numerical solution of the nonlinear differential equation $u''=f(r,u,u')$, $0<r<1$ and the estimates of (d$u$/d$r$) subject to the natural boundary conditions $u(0)=A$ and $u(1)=B$. Both second- and third-order methods are compact and require two and three function evaluations, respectively. The proposed methods are successfully applied to the problems both in cartesian and polar coordinates. Numerical results are provided to illustrate the proposed methods and their convergence.

MSC 2000:: *65L10 Boundary value problems for ODE (numerical methods)
65L50 Mesh generation and refinement (ODE)
34B15 Nonlinear boundary value problems of ODE
65L12 Finite difference methods for ODE
65L20 Stability of numerical methods for ODE

Keywords: Variable mesh methods; Difference method; convergence; numerical results; Nonlinear differential equation; Singular equation; Diffusion-convection equation; Burgers' equation; RMS errors

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