Acta mathematica scientia,Series B ›› 2011, Vol. 31 ›› Issue (4): 1272-1280.doi: 10.1016/S0252-9602(11)60314-7

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QUASI-NEUTRAL LIMIT OF THE BIPOLAR NAVIER-STOKES-POISSON SYSTEM

 YANG Xiu-Hui   

  1. Department of Mathematics, College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2009-10-23 Online:2011-07-20 Published:2011-07-20
  • Supported by:

    This work was supported by the Science Fund for Young Scholars of Nanjing University of Aeronautics and Astronautics.

Abstract:

This paper is concerned with the quasi-neutral limit of the bipolar Navier-Stokes-Poisson system. It is rigorously proved, by introducing the new modulated energy functional and using the refined energy analysis, that the strong solutions of the bipolar Navier-Stokes-Poisson system converge to the strong solution of the compressible Navier-Stokes equations as the Debye length goes to zero. Moreover, if we let the viscous coeffi-cients and the Debye length go to zero simultaneously, then we obtain the convergence of the strong solutions of bipolar Navier-Stokes-Poisson system to the strong solution of the compressible Euler equations.

Key words: bipolar Navier-Stokes-Poisson system, compressible Navier-Stokes equa-tions, compressible Euler equations, modulated energy functional

CLC Number: 

  • 76X05
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