Improved analysis of regular gravity waves and coefficient of reflexion using one or two moving probes
Identifieur interne : 001887 ( Main/Exploration ); précédent : 001886; suivant : 001888Improved analysis of regular gravity waves and coefficient of reflexion using one or two moving probes
Auteurs : J. Brossard [France] ; A. Hémon [France] ; E. Rivoalen [France]Source :
- Coastal Engineering [ 0378-3839 ] ; 2000.
Abstract
This paper describes a complete spatio-temporal measurement of a set of regular waves propagating in a flume or a towing tank. This analysis is obtained by Doppler effect using the displacement of one or two moving free surface probes. The Doppler shift allows the separation of all the modes of the wave (incident, reflected, free and phase locked modes). This measurement includes for each mode the amplitude, the angular frequency, the wavenumber and the reflexion coefficients; only a one-point probe moving at a constant speed is required. A highly accurate method is also described, using two one-point probes moving at the same speed but in opposite directions. The use of the one-probe method for a towing tank, where the platform transmits the motion, is straightforward. The two-probes method has a great interest for coastal engineering laboratory measurements.
Url:
DOI: 10.1016/S0378-3839(99)00060-5
Affiliations:
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Brossard</name><affiliation wicri:level="4"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Mécanique, Faculté des Sciences et Techniques, Université du Havre, 25 rue P. Lebon, BP 540, 76058 Le Havre Cedex</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Le Havre</settlement></placeName><orgName type="university">Université du Havre</orgName></affiliation></author><author><name sortKey="Hemon, A" sort="Hemon, A" uniqKey="Hemon A" first="A." last="Hémon">A. 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This analysis is obtained by Doppler effect using the displacement of one or two moving free surface probes. The Doppler shift allows the separation of all the modes of the wave (incident, reflected, free and phase locked modes). This measurement includes for each mode the amplitude, the angular frequency, the wavenumber and the reflexion coefficients; only a one-point probe moving at a constant speed is required. A highly accurate method is also described, using two one-point probes moving at the same speed but in opposite directions. The use of the one-probe method for a towing tank, where the platform transmits the motion, is straightforward. The two-probes method has a great interest for coastal engineering laboratory measurements.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Haute-Normandie</li><li>Région Normandie</li><li>Île-de-France</li></region><settlement><li>Le Havre</li><li>Paris</li></settlement><orgName><li>Université du Havre</li></orgName></list><tree><country name="France"><region name="Région Normandie"><name sortKey="Brossard, J" sort="Brossard, J" uniqKey="Brossard J" first="J." last="Brossard">J. Brossard</name></region><name sortKey="Hemon, A" sort="Hemon, A" uniqKey="Hemon A" first="A." last="Hémon">A. Hémon</name><name sortKey="Rivoalen, E" sort="Rivoalen, E" uniqKey="Rivoalen E" first="E." last="Rivoalen">E. Rivoalen</name><name sortKey="Rivoalen, E" sort="Rivoalen, E" uniqKey="Rivoalen E" first="E." last="Rivoalen">E. Rivoalen</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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