Communications in Mathematical Sciences

Volume 7 (2009)

Number 3

On the formation of shocks to the compressible Euler equations

Pages: 627 – 634

DOI: http://dx.doi.org/10.4310/CMS.2009.v7.n3.a6

Authors

Dongho Chae

Seung-Yeal Ha

Abstract

We present an explicit upper-bound for the life-span of C3-smooth solutions to the multi-dimensional compressible Euler equations with a certain class of initial data containing compression vacuum states. We also show that the divergence of a fluid velocity will blow up along the particle trajectories issued from the compression vacuum states, which represent a shock formation at the vacuum states.

Keywords

Compressible Euler equations; blow-up; shock wave; particle trajectory; vacuum boundary

2010 Mathematics Subject Classification

35B30, 35Q35

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