Acta mathematica scientia,Series B ›› 2015, Vol. 35 ›› Issue (3): 746-760.doi: 10.1016/S0252-9602(15)30018-7

• Articles • Previous Articles    

ASYMPTOTIC BEHAVIOR OF THE STOKES APPROXIMATION EQUATIONS FOR COMPRESSIBLE FLOWS IN R3

Yunshun WU1,2, Zhong TAN3   

  1. 1. School of Mathematical Sciences, Xiamen University, Xiamen 361005, China;
    2. School of Mathematics and Computer Science, Guizhou Normal University, Guiyang 550001, China;
    3. School of Mathematical Sciences, Xiamen University, Xiamen 361005, China
  • Received:2014-05-08 Online:2015-05-01 Published:2015-05-01
  • Contact: Yunshun WU E-mail:wuyunshun1979@163.com
  • Supported by:

    Supported by National Natural Science Foundation of China (11271305, 11161011) and Science and Technology Foundation of Guizhou Province of China (LKS[2012]11, LKS[2013]03, LKS[2013]05).

Abstract:

We consider the Stokes approximation equations for compressible flows in R3. The global unique solution and optimal convergence rates are obtained by pure energy method provided the initial perturbation around a constant state is small. In particular, the optimal decay rates of the higher-order spatial derivatives of the solution are obtained. As an immediate byproduct, the usual Lp-L2(1≤ p≤ 2) type of the optimal decay rate follow without requiring that the Lp norm of initial data is small.

Key words: Stokes approximation equations, energy method, optimal decay rates, Sobolev interpolation, negative Sobolev space

CLC Number: 

  • 35B40
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