Effect of wind profile on the instability of wind blowing over water

A linear stability analysis of the inviscid, parallel flow of air over water leads to an eigenvalue problem for the wave speed, which is solved numerically for air profiles typical of both laminar and turbulent flows. Comparison is made with Miles’ (1957) theory; growth rates differ from those predi...

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Veröffentlicht in:	Journal of fluid mechanics 1993-07, Vol.252, p.383-398
Hauptverfasser:	Morland, L. C., Saffman, P. G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Earth, ocean, space Exact sciences and technology External geophysics Physics of the oceans Surface waves, tides and sea level. Seiches
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	A linear stability analysis of the inviscid, parallel flow of air over water leads to an eigenvalue problem for the wave speed, which is solved numerically for air profiles typical of both laminar and turbulent flows. Comparison is made with Miles’ (1957) theory; growth rates differ from those predicted from the Miles (1957) formula but are in agreement with Conte & Miles’ (1959) computations for turbulent flow profiles. In the limit of a highly sheared wind profile the numerical computations retrieve the Kelvin-Helmholtz instability.
ISSN:	0022-1120 1469-7645
DOI:	10.1017/S0022112093003805