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Asymptotic properties of a class of linearly implicit schemes for weakly compressible Euler equations

机译:弱可压缩欧拉方程的一类线性隐式方案的渐近性质

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In this paper we derive and analyse a class of linearly implicit schemes which includes the one of Feistauer and Kucera (J Comput Phys 224:208-221, 2007) as well as the class of RS-IMEX schemes (Schutz and Noelle in J Sci Comp 64:522-540, 2015; Kaiser et al. in J Sci Comput 70:1390-1407, 2017; Bispen et al. in Commun Comput Phys 16:307-347, 2014; Zakerzadeh in ESAIM Math Model Numer Anal 53:893-924, 2019). The implicit part is based on a Jacobian matrix which is evaluated at a reference state. This state can be either the solution at the old time level as in Feistauer and Kucera (2007), or a numerical approximation of the incompressible limit equations as in Zeifang et al. (Commun Comput Phys 27:292-320, 2020), or possibly another state. Subsequently, it is shown that this class of methods is asymptotically preserving under the assumption of a discrete Hilbert expansion. For a one-dimensional setting with some limitations on the reference state, the existence of a discrete Hilbert expansion is shown.
机译:在本文中,我们推导并分析了一类线性隐式方案,其中包括Feistauer和Kucera(J Comput Phys 224:208-221,2007)以及RS-IMEX方案(Schutz and Noelle in J Sci Comp 64:522-540,2015;Kaiser 等人,J Sci Comput 70:1390-1407,2017 年;Bispen 等人,Commun Comput Phys 16:307-347,2014 年;Zakerzadeh 在 ESAIM 数学模型数字分析 53:893-924,2019 年)。隐式部分基于在参考状态下计算的雅可比矩阵。这种状态可以是旧时间水平的解,如Feistauer和Kucera(2007),也可以是不可压缩极限方程的数值近似,如Zeifang等人(Commun Comput Phys 27:292-320,2020),也可能是另一种状态。随后,表明这类方法是在离散希尔伯特展开的假设下渐近保持的。对于对参考状态有一定限制的一维设置,显示了离散希尔伯特展开的存在。

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