Wave dispersion on a sheared current

The relationship between frequency and wavelength for waves travelling on a sheared current has been explored in a laboratory flume. Shifts in wavenumber occur due to the rotational contribution to the shear in addition to the Doppler shift of the mean flow. Measured changes in wavenumber due to pos...

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Veröffentlicht in:	Applied ocean research 1994, Vol.16 (5), p.313-315
Hauptverfasser:	Nepf, H.M., Monismith, S.G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Earth, ocean, space Exact sciences and technology External geophysics Marine Physics of the oceans Surface waves, tides and sea level. Seiches
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The relationship between frequency and wavelength for waves travelling on a sheared current has been explored in a laboratory flume. Shifts in wavenumber occur due to the rotational contribution to the shear in addition to the Doppler shift of the mean flow. Measured changes in wavenumber due to positive and negative shears (shear is created upstream of the wavemaker by curved screens) agree with the dispersion relation described by J. Miles ( J. Fluid Mech. 8 (1960) 593–610).
ISSN:	0141-1187 1879-1549
DOI:	10.1016/0141-1187(94)90019-1