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- W2393023151 abstract "One of the difficulties for the numerical solution of two-dimensional Lagrangian radiation hydrodynamic equations is to construct good difference schemes over irregular mesh. In this paper, a series of numerical experiments and some theoretical analysis have been done carefully for the well known difference schemes of five-point and nine-point which provide approximations to the diffusion operator in the two-dimensional energy equation with three-temperature. The results obtained show that the five-point scheme and nine-point scheme are consistent of order two over uniform rectangle mesh and uniform parallelogram mesh respectively, however, which are in general not consistent over irregular quadrilateral mesh. Although nine-point scheme is superior to five-point scheme, yet its efficiency is not as good as that we have been thought, and therefore in order to improve numerical calculation of radiation hydrodynamics, it is emergent to construct new difference scheme which really approximates to the diffusion operator over general irregular quadrilateral mesh." @default.
- W2393023151 created "2016-06-24" @default.
- W2393023151 creator A5071744813 @default.
- W2393023151 date "2002-01-01" @default.
- W2393023151 modified "2023-09-25" @default.
- W2393023151 title "Numerical Experiments for FivePoint and Nine-Point Difference Approximation of Adiffusion Operator on Irregular Quadrilateral Grids" @default.
- W2393023151 hasPublicationYear "2002" @default.
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