EPJ Web Conf.
Volume 143, 2017EFM16 – Experimental Fluid Mechanics 2016
|Number of page(s)||8|
|Published online||12 May 2017|
Laboratory modelling of the transfer processes between the ocean and atmosphere in the boundary layers
1 Institute of applied physics RAS, Geophysical Research Division, 603950 Ulyanova st. 46, Nizhny Novgorod, Russia
2 Lobachevsky state university of Nizhny Novgorod, 603950 Prospect Gagarina 23, Nizhny Novgorod, Russia
* Corresponding author: email@example.com
Published online: 12 May 2017
The processes of momentum and heat transfer between ocean and atmosphere in the boundary layer were investigated within laboratory modeling for a wide range of wind speed and surface wave including hurricane conditions. Experiments were carried out on the Wind-Wave Flume of the Large Thermostratified Tank of IAP RAS. A special net located under the surface at different depths allows to vary parameters of surface waves independently on wind parameters. Theory of self-similarity of air flow parameters in the flume was used to calculate values aerodynamic and heat transfer coefficients from the measured velocity and temperature profiles by Pito and hotfilm gauges respectively. Simultaneous measurements of surface elevation with system wire allow to obtain spectra and integral parameters of waves. It was demonstrated that in contrast to the drag coefficient, heat transfer coefficient is virtually independent of wind speed and wave parameters to the moment of the beginning of spray generation and then increases rapidly.
© The Authors, published by EDP Sciences, 2017
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