Weighted compact scheme for shock capturing. (English) Zbl 1044.76046

Jiang, Li; Shan, Hua; Liu, Chaoqun

Int. J. Comput. Fluid Dyn. 15, No. 2, 147-155 (2001).

Summary: We present a new class of finite difference schemes – the weighted compact schemes. According to the idea of the WENO schemes, the weighted compact scheme is constructed by a combination of the approximations of derivatives on candidate stencils with properly assigned weights so that the non-oscillatory property is achieved when discontinuities appear. The primitive function reconstruction method of ENO schemes is applied to obtain the conservative form of the weighted compact scheme. This new scheme not only preserves the characteristic of standard compact schemes and achieves high order accuracy and high resolution using a compact stencil, but also can accurately capture shock waves and discontinuities without oscillation. Numerical examples show that the new scheme is promising and successful.

MSC:

76M20	Finite difference methods applied to problems in fluid mechanics
76L05	Shock waves and blast waves in fluid mechanics

Keywords:

conservative formulation; primitive function reconstruction method

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