Monotone finite volume schemes for diffusion equations on polygonal meshes
Journal of Computational Physics
A finite volume method for approximating 3D diffusion operators on general meshes
Journal of Computational Physics
Linearity preserving nine-point schemes for diffusion equation on distorted quadrilateral meshes
Journal of Computational Physics
A cell functional minimization scheme for parabolic problem
Journal of Computational Physics
The finite volume scheme preserving extremum principle for diffusion equations on polygonal meshes
Journal of Computational Physics
A Finite Volume Method for Solving Parabolic Equations on Logically Cartesian Curved Surface Meshes
SIAM Journal on Scientific Computing
A nine-point scheme with explicit weights for diffusion equations on distorted meshes
Applied Numerical Mathematics
SIAM Journal on Scientific Computing
Journal of Computational Physics
An improved monotone finite volume scheme for diffusion equation on polygonal meshes
Journal of Computational Physics
Journal of Computational Physics
Journal of Computational Physics
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A nine point scheme is presented for discretizing diffusion operators on distorted quadrilateral meshes. The advantage of this method is that highly distorted meshes can be used without the numerical results being altered remarkably, and it treats material discontinuities rigorously and offers an explicit expression for the face-centered flux; moreover, it has only the cell-centered unknowns. We prove that the method is stable and has first-order convergence on distorted meshes. Numerical experiments show that the method has second-order or nearly second-order accuracy on distorted meshes.