caa a22 4500 606198059 CHVBK 20210128100932.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00348-015-2054-z doi (NATIONALLICENCE)springer-10.1007/s00348-015-2054-z Large-scale free surface measurement for the analysis of ship waves in a towing tank [Elektronische Daten] [Guillaume Gomit, Ludovic Chatellier, Damien Calluaud, Laurent David, Didier Fréchou, Romuald Boucheron, Olivier Perelman, Christian Hubert] This paper is presenting an optical method for free surface measurement of a stationary flow suitable for large-scale experiments in a large towing tank. The new measurement device is based on the projection of laser beams on the surface of the fluid and on the use of a stereoscopic system. The principle of the method is to detect the impact of the laser beams on the air/water interface in order to determine the height of the surface by triangulation for a given number of positions. This method is applied to the measurement of the stationary wave field around a ship model at 1/10th scale. The paper also emphasizes that for low Froude numbers, ((F L =U/√(gL), where U is the ship velocity and L the ship length), the effects of the scale on the flow characteristics are limited. These scale effects are studied by comparison with measurements taken in a smaller towing tank around the same ship model at scale 1/77.5. The free surface and the velocity field near the hull at the two scales are compared. Springer-Verlag Berlin Heidelberg, 2015 Gomit Guillaume Institut Pprime, CNRS, Université de Poitiers, ISAE-ENSMA, 86000, Poitiers, France aut Chatellier Ludovic Institut Pprime, CNRS, Université de Poitiers, ISAE-ENSMA, 86000, Poitiers, France aut Calluaud Damien Institut Pprime, CNRS, Université de Poitiers, ISAE-ENSMA, 86000, Poitiers, France aut David Laurent Institut Pprime, CNRS, Université de Poitiers, ISAE-ENSMA, 86000, Poitiers, France aut Fréchou Didier DGA Techniques Hydrodynamiques, 27100, Val de Reuil, France aut Boucheron Romuald DGA Techniques Hydrodynamiques, 27100, Val de Reuil, France aut Perelman Olivier DGA Techniques Hydrodynamiques, 27100, Val de Reuil, France aut Hubert Christian ERROL, 94100, Saint Maur des Fossés, France aut Experiments in Fluids Springer Berlin Heidelberg 56/10(2015-10-01), 1-13 0723-4864 56:10<1 2015 56 348 https://doi.org/10.1007/s00348-015-2054-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-015-2054-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gomit Guillaume Institut Pprime, CNRS, Université de Poitiers, ISAE-ENSMA, 86000, Poitiers, France aut NATIONALLICENCE 700 1- Chatellier Ludovic Institut Pprime, CNRS, Université de Poitiers, ISAE-ENSMA, 86000, Poitiers, France aut NATIONALLICENCE 700 1- Calluaud Damien Institut Pprime, CNRS, Université de Poitiers, ISAE-ENSMA, 86000, Poitiers, France aut NATIONALLICENCE 700 1- David Laurent Institut Pprime, CNRS, Université de Poitiers, ISAE-ENSMA, 86000, Poitiers, France aut NATIONALLICENCE 700 1- Fréchou Didier DGA Techniques Hydrodynamiques, 27100, Val de Reuil, France aut NATIONALLICENCE 700 1- Boucheron Romuald DGA Techniques Hydrodynamiques, 27100, Val de Reuil, France aut NATIONALLICENCE 700 1- Perelman Olivier DGA Techniques Hydrodynamiques, 27100, Val de Reuil, France aut NATIONALLICENCE 700 1- Hubert Christian ERROL, 94100, Saint Maur des Fossés, France aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/10(2015-10-01), 1-13 0723-4864 56:10<1 2015 56 348