Frictional effect on stability of discontinuity interface in tangential velocity of a shallow-water flow

Liangbing Jin, Lê Thị Thái, Yasuhide Fukumoto

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

We examine a frictional effect on the linear stability of an interface of discontinuity in tangential velocity. The fluid is moving with uniform velocity U in a region but is at rest in the other, and the bottom surface is assumed to exert drag force, quadratic in velocity, on the thin fluid layer. In the absence of the drag, the instability of the Kelvin-Helmholtz type is suppressed for U>8c, with c being the propagating speed of the gravity wave. We find by asymptotic analyses for both small and large values of the drag strength that the drag, regardless of its strength, makes the flow unstable for the whole range of the Froude number U/c.

本文言語英語
論文番号125839
ジャーナルPhysics Letters, Section A: General, Atomic and Solid State Physics
383
26
DOI
出版ステータス出版済み - 9 12 2019

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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