Communications on Applied Mathematics and Computation ›› 2023, Vol. 5 ›› Issue (1): 31-63.doi: 10.1007/s42967-020-00117-y

• ORIGINAL PAPERS • Previous Articles     Next Articles

High-Order Bound-Preserving Finite Difference Methods for Multispecies and Multireaction Detonations

Jie Du1,3, Yang Yang2   

  1. 1 Yau Mathematical Sciences Center, Tsinghua University, Beijing 100084, China;
    2 Department of Mathematical Sciences, Michigan Technological University, Houghton, MI 49931, USA;
    3 Yanqi Lake Beijing Institute of Mathematical Sciences and Applications, Beijing 101408, China
  • Received:2020-09-11 Revised:2020-12-18 Online:2023-03-20 Published:2023-03-08
  • Contact: Yang Yang,E-mail:yyang7@mtu.edu;Jie Du,E-mail:jdu@tsinghua.edu.cn E-mail:yyang7@mtu.edu;jdu@tsinghua.edu.cn
  • Supported by:
    Jie Du is supported by the National Natural Science Foundation of China under Grant Number NSFC 11801302 and Tsinghua University Initiative Scientific Research Program. Yang Yang is supported by the NSF Grant DMS-1818467.

Abstract: In this paper, we apply high-order finite difference (FD) schemes for multispecies and multireaction detonations (MMD). In MMD, the density and pressure are positive and the mass fraction of the ith species in the chemical reaction, say zi, is between 0 and 1, with Σzi = 1. Due to the lack of maximum-principle, most of the previous bound-preserving technique cannot be applied directly. To preserve those bounds, we will use the positivity-preserving technique to all the zi'is and enforce Σzi = 1 by constructing conservative schemes, thanks to conservative time integrations and consistent numerical fluxes in the system. Moreover, detonation is an extreme singular mode of flame propagation in premixed gas, and the model contains a significant stiff source. It is well known that for hyperbolic equations with stiff source, the transition points in the numerical approximations near the shocks may trigger spurious shock speed, leading to wrong shock position. Intuitively, the high-order weighted essentially non-oscillatory (WENO) scheme, which can suppress oscillations near the discontinuities, would be a good choice for spatial discretization. However, with the nonlinear weights, the numerical fluxes are no longer “consistent”, leading to nonconservative numerical schemes and the bound-preserving technique does not work. Numerical experiments demonstrate that, without further numerical techniques such as subcell resolutions, the conservative FD method with linear weights can yield better numerical approximations than the nonconservative WENO scheme.

Key words: Weighted essentially non-oscillatory scheme, Finite difference method, Stiff source, Detonations, Bound-preserving, Conservative

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