数学物理学报(英文版) ›› 2012, Vol. 32 ›› Issue (5): 1743-1758.doi: 10.1016/S0252-9602(12)60138-6

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DEGENERATE BOUNDARY LAYER SOLUTIONS TO THE GENERALIZED BENJAMIN-BONAMAHONY-BURGERS EQUATION

肖清华|陈正争*   

  1. School of Mathematics and Statistics, Wuhan University, Wuhan 430072, China
  • 收稿日期:2011-07-06 修回日期:2011-10-12 出版日期:2012-09-20 发布日期:2012-09-20
  • 通讯作者: 陈正争,chenzzandu@163.com E-mail:qhxiaoll@126.com; chenzzandu@163.com
  • 基金资助:

    This work was supported by the “Fundamental Research Funds for the Central Universities” and the National Natural Science Foundation of China (10871151).

DEGENERATE BOUNDARY LAYER SOLUTIONS TO THE GENERALIZED BENJAMIN-BONAMAHONY-BURGERS EQUATION

 XIAO Qing-Hua, CHEN Zheng-Zheng*   

  1. School of Mathematics and Statistics, Wuhan University, Wuhan 430072, China
  • Received:2011-07-06 Revised:2011-10-12 Online:2012-09-20 Published:2012-09-20
  • Contact: CHEN Zheng-Zheng,chenzzandu@163.com E-mail:qhxiaoll@126.com; chenzzandu@163.com
  • Supported by:

    This work was supported by the “Fundamental Research Funds for the Central Universities” and the National Natural Science Foundation of China (10871151).

摘要:

This paper is concerned with the convergence rates of the global solutions of the generalized Benjamin-Bona-Mahony-Burgers (BBM-Burgers) equation to the cor-responding degenerate boundary layer solutions in the half-space. It is shown that the convergence rate is t−α/4 as t →1 provided that the initial perturbation lies in H1α for αα(q) := 3+ 2/q , where q is the degeneracy exponent of the flux function. Our analysis is based on the space-time weighted energy method combined with a Hardy type inequality with the best possible constant introduced in [1].

关键词: generalized BBM-Burgers equation, degenerate boundary layer solutions, convergence rates, Hardys inequality, space-time weighted energy method

Abstract:

This paper is concerned with the convergence rates of the global solutions of the generalized Benjamin-Bona-Mahony-Burgers (BBM-Burgers) equation to the cor-responding degenerate boundary layer solutions in the half-space. It is shown that the convergence rate is t−α/4 as t →1 provided that the initial perturbation lies in H1α for αα(q) := 3+ 2/q , where q is the degeneracy exponent of the flux function. Our analysis is based on the space-time weighted energy method combined with a Hardy type inequality with the best possible constant introduced in [1].

Key words: generalized BBM-Burgers equation, degenerate boundary layer solutions, convergence rates, Hardys inequality, space-time weighted energy method

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  • 34K21