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High-Order Bicompact Schemes for Shock-Capturing Computations of Detonation Waves

机译:用于冲击波捕获计算的高阶Bicompact方案

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An implicit scheme with splitting with respect to physical processes is proposed for a stiff system of two-dimensional Euler gas dynamics equations with chemical source terms. For the first time, convection is computed using a bicompact scheme that is fourth-order accurate in space and third-order accurate in time. This high-order bicompact scheme is L-stable in time. It employs a conservative limiting method and Cartesian meshes with solution-based adaptive mesh refinement. The chemical reactions are computed using an L-stable second-order Runge-Kutta scheme. The developed scheme is successfully tested as applied to several problems concerning detonation wave propagation in a two-species ideal gas with a single combustion reaction. The advantages of bicompact schemes over the popular MUSCL and WENO5 schemes as applied to shock-capturing computations of detonation waves are discussed.
机译:提出了一种具有相对于物理过程分裂的隐式方案,用于具有化学源术语的二维欧拉气体动力学方程的刚性系统。 首次使用二阶准确性和三阶准确的二阶准确地计算对流。 这种高阶双色化方案及时稳定。 它采用了一种保守的限制方法和笛卡尔网,具有基于解决方案的自适应网格细化。 使用L稳定的二阶行为-Kutta方案计算化学反应。 开发方案被成功地测试,以应用于具有单一燃烧反应的双种理想气体中的爆炸波传播的几个问题。 讨论了与应用于爆震波的冲击捕获计算的流行的Muscl和Weno5方案的Bicompact方案的优点。

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