@Article{JCM-24-3, author = {}, title = {A Finite Difference Scheme for Solving the Nonlinear Poisson-Boltzmann Equation Modeling Charged Spheres}, journal = {Journal of Computational Mathematics}, year = {2006}, volume = {24}, number = {3}, pages = {252--264}, abstract = {
In this work, we propose an efficient numerical method for computing the electrostatic interaction between two like-charged spherical particles which is governed by the nonlinear Poisson-Boltzmann equation. The nonlinear problem is solved by a monotone iterative method which leads to a sequence of linearized equations. A modified central finite difference scheme is developed to solve the linearized equations on an exterior irregular domain using a uniform Cartesian grid. With uniform grids, the method is simple, and as a consequence, multigrid solvers can be employed to speed up the convergence. Numerical experiments on cases with two isolated spheres and two spheres confined in a charged cylindrical pore are carried out using the proposed method. Our numerical schemes are found efficient and the numerical results are found in good agreement with the previous published results.
}, issn = {1991-7139}, doi = {https://doi.org/2006-JCM-8750}, url = {https://global-sci.com/article/85088/a-finite-difference-scheme-for-solving-the-nonlinear-poisson-boltzmann-equation-modeling-charged-spheres} }