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Boundary Layer Problem and Quasineutral Limit of Compressible Euler-Poisson System

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Shu Wang is supported by NSF grant 11371042, Chundi Liu is supported by NSF grant 11471028,11601021

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  • We study the boundary layer problem and the quasineutral limit of the compressible Euler-Poisson system arising from plasma physics in a domain with boundary. The quasineutral regime is the incompressible Euler equations. Compared to the quasineutral limit of compressible Euler-Poisson equations in whole space or periodic domain, the key difficulty here is to deal with the singularity caused by the boundary layer. The proof of the result is based on a λ-weighted energy method and the matched asymptotic expansion method.

    Mathematics Subject Classification: Primary: 35B25, 35B40; Secondary: 35K57.


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