Acta mathematica scientia,Series B ›› 2022, Vol. 42 ›› Issue (1): 155-171.doi: 10.1007/s10473-022-0108-x

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EXISTENCE OF PERIODIC SOLUTIONS TO AN ISOTHERMAL RELATIVISTIC EULER SYSTEM

Fei WU1,2, Zejun WANG1,2   

  1. 1. Department of Mathematics, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China;
    2. Key Laboratory of Mathematical Modelling and High Performance Computing of Air Vehicles (NUAA), MIIT, Nanjing, 211106, China
  • Received:2020-08-06 Revised:2021-05-18 Online:2022-02-25 Published:2022-02-24
  • Contact: Fei WU,E-mail:wufei003@nuaa.edu.cn E-mail:wufei003@nuaa.edu.cn
  • Supported by:
    The work was supported by NSFC (11671193) and the Fundamental Research Funds for the Central Universities NE2015005.

Abstract: In this paper, we study the global existence of periodic solutions to an isothermal relativistic Euler system in BV space. First, we analyze some properties of the shock and rarefaction wave curves in the Riemann invariant plane. Based on these properties, we construct the approximate solutions of the isothermal relativistic Euler system with periodic initial data by using a Glimm scheme, and prove that there exists an entropy solution $V(x,t)$ which belongs to $L^{\infty}\cap {\rm BV}_{\rm loc}(\mathbb{R}\times\mathbb{R}_+)$.

Key words: isothermal relativistic Euler system, Glimm scheme, Riemann problem, BV space, periodicity

CLC Number: 

  • 76Y05
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