数学物理学报(英文版) ›› 2020, Vol. 40 ›› Issue (5): 1352-1390.doi: 10.1007/s10473-020-0512-z

• 论文 • 上一篇    下一篇

NONLINEAR STABILITY OF RAREFACTION WAVES FOR A COMPRESSIBLE MICROPOLAR FLUID MODEL WITH ZERO HEAT CONDUCTIVITY

金晶1, Noor REHMAN2, 江芹1   

  1. 1. School of Mathematics and Statistics, Huanggang Normal University, Huanggang 438000, China;
    2. School of Mathematics and Statistics, Central China Normal University, Wuhan 430079, China
  • 收稿日期:2018-12-11 修回日期:2020-05-12 出版日期:2020-10-25 发布日期:2020-11-04
  • 通讯作者: Jing JIN E-mail:jinjing@hgnu.edu.cn
  • 作者简介:Noor REHMAN,E-mail:noorwzr786@gmail.com; Qin JIANG,E-mail:113572710@qq.com
  • 基金资助:
    The first author was supported by Hubei Natural Science (2019CFB834 ). The second author was supported by the NSFC (11971193 ).

NONLINEAR STABILITY OF RAREFACTION WAVES FOR A COMPRESSIBLE MICROPOLAR FLUID MODEL WITH ZERO HEAT CONDUCTIVITY

Jing JIN1, Noor REHMAN2, Qin JIANG1   

  1. 1. School of Mathematics and Statistics, Huanggang Normal University, Huanggang 438000, China;
    2. School of Mathematics and Statistics, Central China Normal University, Wuhan 430079, China
  • Received:2018-12-11 Revised:2020-05-12 Online:2020-10-25 Published:2020-11-04
  • Contact: Jing JIN E-mail:jinjing@hgnu.edu.cn
  • Supported by:
    The first author was supported by Hubei Natural Science (2019CFB834 ). The second author was supported by the NSFC (11971193 ).

摘要: In 2018, Duan [1] studied the case of zero heat conductivity for a one-dimensional compressible micropolar fluid model. Due to the absence of heat conductivity, it is quite difficult to close the energy estimates. He considered the far-field states of the initial data to be constants; that is, $\lim\limits_{x\rightarrow \pm\infty}(v_0,u_0,\omega_0,\theta_0)(x)=(1,0,0,1)$. He proved that the solution tends asymptotically to those constants. In this article, under the same hypothesis that the heat conductivity is zero, we consider the far-field states of the initial data to be different constants - that is, $\lim\limits_{x\rightarrow \pm\infty}(v_0,u_0,\omega_0,\theta_0)(x)=(v_\pm, u_\pm, 0, \theta_\pm)$-and we prove that if both the initial perturbation and the strength of the rarefaction waves are assumed to be suitably small, the Cauchy problem admits a unique global solution that tends time - asymptotically toward the combination of two rarefaction waves from different families.

关键词: micropolar fluids, rarefaction wave, zero-heat conductivity

Abstract: In 2018, Duan [1] studied the case of zero heat conductivity for a one-dimensional compressible micropolar fluid model. Due to the absence of heat conductivity, it is quite difficult to close the energy estimates. He considered the far-field states of the initial data to be constants; that is, $\lim\limits_{x\rightarrow \pm\infty}(v_0,u_0,\omega_0,\theta_0)(x)=(1,0,0,1)$. He proved that the solution tends asymptotically to those constants. In this article, under the same hypothesis that the heat conductivity is zero, we consider the far-field states of the initial data to be different constants - that is, $\lim\limits_{x\rightarrow \pm\infty}(v_0,u_0,\omega_0,\theta_0)(x)=(v_\pm, u_\pm, 0, \theta_\pm)$-and we prove that if both the initial perturbation and the strength of the rarefaction waves are assumed to be suitably small, the Cauchy problem admits a unique global solution that tends time - asymptotically toward the combination of two rarefaction waves from different families.

Key words: micropolar fluids, rarefaction wave, zero-heat conductivity

中图分类号: 

  • 35Q35