Abstract
The structure of pressure and velocity fields in the air above mechanically generated water waves was investigated in order to evaluate their contribution to the transfer of momentum and energy from wind to water waves. The wave-induced composite pressure coefficient, at the fundamental mode, shows in general an exponential decay behavior, but the rate of decay is different from that predicted by potential flow theory. The relative wave-induced pressure phase remains fairly constant throughout the boundary layer. The momentum and energy transfer rates supported by the waves were found to be dominated by the wave-induced pressure, but the transfer of the corresponding total quantities to both waves and current may or may not, depending on the ratio of the wave speed to the free-stream velocity, c/U. The contribution of the wave-induced Reynolds stresses to the transfer processes is negligible.
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© 1984 Springer Science+Business Media Dordrecht
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Papadimitrakis, Y.A., Hsu, E.Y., Street, R.L. (1984). Measurements of the Fluctuating Pressure in the Turbulent Boundary Layer over Progressive, Mechanically Generated Water Waves. In: Brutsaert, W., Jirka, G.H. (eds) Gas Transfer at Water Surfaces. Water Science and Technology Library, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1660-4_18
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DOI: https://doi.org/10.1007/978-94-017-1660-4_18
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-8393-7
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