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2024 | OriginalPaper | Buchkapitel

Stability Analysis from Fourth-Order Nonlinear Multiphase Deep Water Wavetrains

verfasst von : Tanmoy Pal, Asoke Kumar Dhar

Erschienen in: Fluid Mechanics and Fluid Power, Volume 5

Verlag: Springer Nature Singapore

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Abstract

The nonlinear evolution equations (NLEE) of fourth-order for the propagation of two surface gravity wavetrains (SGW) in infinite depth of water are derived. Based on these evolution equations, the properties of sideband instability of uniform gravity waves are investigated. Considerable deviations are observed from the results obtained from the cubic NLEE, which are the nonlinear Schrödinger equations (NLSE). An expression of the instability growth rate is obtained, and this expression shows a key result that the fourth-order terms in the evolution equations significantly modify the modulational instability properties and produce a decrease in the growth rate for the case of acute angle.

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Metadaten
Titel
Stability Analysis from Fourth-Order Nonlinear Multiphase Deep Water Wavetrains
verfasst von
Tanmoy Pal
Asoke Kumar Dhar
Copyright-Jahr
2024
Verlag
Springer Nature Singapore
DOI
https://doi.org/10.1007/978-981-99-6074-3_44

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