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一维可压缩纳维-斯托克斯系统在动态燃烧中的全局well-posed性

Global well-posedness for one-dimensional compressible Navier--Stokes system in dynamic combustion with small $BV\cap L^1$ initial data

Shanghai Jiao Tong University(上海交通大学)

Siran Li, Haitao Wang, Jianing Yang

AI总结:

本文研究了一维可压缩纳维-斯托克斯系统在动态燃烧中的全局well-posed性,通过迭代方案和格林函数分析,证明了小BV初始数据下的全局解存在性与稳定性。

摘要:

我们建立了针对反应气体混合物的一维可压缩纳维-斯托克斯模型的小BV弱解的全局well-posed性理论。PDE系统的未知量包括比容、速度、温度和反应物的质量分数。对于初始数据在$ L^1(\mathbb{R}) \cap {\rm BV}(\mathbb{R}) $-范数下是常数平衡状态$(1, 0, 1, 0)$的小扰动,我们通过迭代方案建立了局部时间内的弱解存在性,证明了局部弱解的稳定性和唯一性,并通过线性化系统的格林函数分析,证明了具有小BV范数初始数据的全局时间存在性。还刻画了全局BV弱解的长时间行为。这项工作受并扩展了最近关于一维等熵纳维-斯托克斯和纳维-斯托克斯-傅里叶系统的小BV弱解的全局well-posed性理论,该理论由[T.-P. Liu, S.-H. Yu, Commun. Pure Appl. Math. 75 (2022), 223--348]和[H. Wang, S.-H. Yu, X. Zhang, Arch. Ration. Mech. Anal. 245 (2022), 375--477]发展而来。

英文摘要:

We establish the global well-posedness theory of small BV weak solutions to a one-dimensional compressible Navier--Stokes model for reacting gas mixtures in dynamic combustion. The unknowns of the PDE system consist of the specific volume, velocity, temperature, and mass fraction of the reactant. For initial data that are small perturbations around the constant equilibrium state $(1, 0, 1, 0)$ in the $L^1(\mathbb{R}) \cap {\rm BV}(\mathbb{R})$-norm, we establish the local-in-time existence of weak solutions via an iterative scheme, show the stability and uniqueness of local weak solutions, and prove the global-in-time existence of solutions for initial data with small BV-norm via an analysis of the Green's function of the linearised system. The large-time behaviour of the global BV weak solutions is also characterised. This work is motivated by and extends the recent global well-posedness theory for BV weak solutions to the one-dimensional isentropic Navier--Stokes and Navier--Stokes--Fourier systems developed in [T.-P. Liu, S.-H. Yu, Commun. Pure Appl. Math. 75 (2022), 223--348] and [H. Wang, S.-H. Yu, X. Zhang, Arch. Ration. Mech. Anal. 245 (2022), 375--477].

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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