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ADAPTIVE GRID SIMULATION OF HYPERBOLIC EQUATIONS
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  • ADAPTIVE GRID SIMULATION OF HYPERBOLIC EQUATIONS
  • ADAPTIVE GRID SIMULATION OF HYPERBOLIC EQUATIONS
저자명
Li. Haojun,Kang. Myungjoo
간행물명
Journal of the Korean society for industrial and applied mathematics
권/호정보
2013년|17권 4호|pp.279-294 (16 pages)
발행정보
한국산업응용수학회
파일정보
정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

We are interested in an adaptive grid method for hyperbolic equations. A multiresolution analysis, based on a biorthogonal family of interpolating scaling functions and lifted interpolating wavelets, is used to dynamically adapt grid points according to the physical field profile in each time step. Traditional finite-difference schemes with fixed stencils produce high oscillations around sharp discontinuities. In this paper, we hybridize high-resolution schemes, which are suitable for capturing singularities, and apply a finite-difference approach to the scaling functions at non-singular points. We use a total variation diminishing Runge-Kutta method for the time integration. The computational cost is proportional to the number of points present after compression. We provide several numerical examples to verify our approach.