Open Access Research Article

A Note on the Relaxation-Time Limit of the Isothermal Euler Equations

Jiang Xu1* and Daoyuan Fang2

Author Affiliations

1 Department of Mathematics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

2 Department of Mathematics, Zhejiang University, Hangzhou 310027, China

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Boundary Value Problems 2007, 2007:056945 doi:10.1155/2007/56945


The electronic version of this article is the complete one and can be found online at: http://www.boundaryvalueproblems.com/content/2007/1/056945


Received:3 July 2007
Accepted:30 August 2007
Published:22 October 2007

© 2007 Xu and Fang

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

This work is concerned with the relaxation-time limit of the multidimensional isothermal Euler equations with relaxation. We show that Coulombel-Goudon's results (2007) can hold in the weaker and more general Sobolev space of fractional order. The method of proof used is the Littlewood-Paley decomposition.

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