Multigrid solution of high order discretisation for three-dimensional biharmonic equation with Dirichlet boundary conditions of second kind

@article{Dehghan2006MultigridSO,
  title={Multigrid solution of high order discretisation for three-dimensional biharmonic equation with Dirichlet boundary conditions of second kind},
  author={Mehdi Dehghan and Akbar Mohebbi},
  journal={Applied Mathematics and Computation},
  year={2006},
  volume={180},
  pages={575-593}
}
In this paper, we propose two compact finite difference approximations for three-dimensional biharmonic equation with Dirichlet boundary conditions of second kind. In these methods there is no need to define special formulas near the boundaries and boundary conditions are incorporated with these techniques. The unknown solution and its second derivatives are carried as unknowns at grid points. We derive second-order and fourth-order approximations on a 27 point compact stencil. Classical… CONTINUE READING
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