Application of laser doppler velocimetry to the study of turbulence generated by swell in the vicinity of walls or obstacles
Identifieur interne : 001594 ( France/Analysis ); précédent : 001593; suivant : 001595Application of laser doppler velocimetry to the study of turbulence generated by swell in the vicinity of walls or obstacles
Auteurs : M. Bélorgey [France] ; J. Le Bas [France] ; A. Grandjean [France]Source :
- Coastal Engineering [ 0378-3839 ] ; 1989.
Abstract
Swell develops an orbital motion of fluid particles, excluding any technique of measurement of the velocities using a material support, because the disturbance induced by the probe comes back to the point of measurement.Laser Doppler velocimetry allows a sharp measurement of instantaneous velocities and turbulence in fluid flows, without disturbing the movement of the fluid particles.Accordingly, we have adapted this technique so as to analyze: (1) the oscillatory boundary layer generated by swell on the sea-bed; and (2) the swell effect on structures.Our results impose restraints on certain modelizations.
Url:
DOI: 10.1016/0378-3839(89)90023-9
Affiliations:
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