D. A. Sergeev^1,2, G. A. Baydakov^1,2, M. I. Vdovin^1,2, A. A. Kandaurov^1,2, Yu. I. Troitskaya^1,2

¹ Institute of Applied Physics of RAS, Nizhny Novgorod, Russia

² N.I. Lobachevsky State University of Nizhni Novgorod, Russia

Abstract

The study of wind-wave interaction is introduced in the framework of laboratory modeling using the high-speed wind-wave thermostratified channel by the Institute of Applied Physics. As contact methods as well as the most advanced optical techniques based on visualization are used. The experiments were performed in a wide range of wind speeds, including hurricane-force (up to 45 m/s in terms of 10-meter height for in situ conditions), with an intense wave breaking and splashes. The simultaneous measurements of wind and wave parameters allow explaining the trend towards saturation of resistance coefficient (momentum exchange) with hurricane wind speeds by wave tilt saturation. On the assumption of the importance of spray during exchange, for the first time the splash generation was investigated using high-speed video.

Keywords

boundary layers, atmosphere, ocean, hurricanes, laboratory simulation

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