About: Water tunnel (hydrodynamic)

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A water tunnel is an experimental facility used for testing the hydrodynamic behavior of submerged bodies in flowing water. It functions similar to a recirculating wind tunnel, but uses water as the working fluid, and related phenomena are investigated, such as measuring the forces on scale models of submarines or lift and drag on hydrofoils. Water tunnels are sometimes used in place of wind tunnels to perform measurements because techniques like particle image velocimetry (PIV) are easier to implement in water. For many cases as long as the Reynolds number is equivalent, the results are valid, whether a submerged water vehicle model is tested in air or an aerial vehicle is tested in water. For low Reynolds number flows, tunnels can be made to run oil instead of water. The advantage is tha

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rdf:type	Thing yago:WikicatModelBoats architectural structure yago:Artifact100021939 yago:Boat102858304 yago:Conveyance103100490 yago:Craft103125870 yago:Instrumentality103575240 yago:Object100002684 yago:PhysicalEntity100001930 yago:Vehicle104524313 yago:Vessel104530566 yago:Whole100003553
rdfs:label	Wasserkanal (de) Túnel de água (pt) Water tunnel (hydrodynamic) (en)
rdfs:comment	Um túnel de água é uma instalação experimental usada para testar o comportamento hidrodinâmico de corpos submersos em água corrente. É muito semelhante a um túnel de vento de recirculação, mas com água como fluido de trabalho, e fenômenos relacionados são estudados, tais como a medição das forças sobre modelos em escala de submarinos ou sustentação ou arrasto em hidrofólios. (pt) Ein Wasserkanal ist ein Kanal oder ein Becken zur Untersuchung von Strömungen. Ähnlich wie bei einem Windkanal werden dabei Versuchsobjekte einem kontrolliert strömenden Medium ausgesetzt. Durch die im Vergleich zu Luft hohe Dichte und kleine kinematische Viskosität von Wasser werden schon bei niedrigen Strömungsgeschwindigkeiten und kleinen Abmessungen hohe Reynolds-Zahlen erreicht. Bei der gleichen Modellgröße und Strömungsgeschwindigkeit ergibt sich eine etwa 15-fach größere Reynolds-Zahl als im Windkanal. Durch einen erhöhten Wasserdruck lässt sich der Nachteil der Kavitation reduzieren. (de) A water tunnel is an experimental facility used for testing the hydrodynamic behavior of submerged bodies in flowing water. It functions similar to a recirculating wind tunnel, but uses water as the working fluid, and related phenomena are investigated, such as measuring the forces on scale models of submarines or lift and drag on hydrofoils. Water tunnels are sometimes used in place of wind tunnels to perform measurements because techniques like particle image velocimetry (PIV) are easier to implement in water. For many cases as long as the Reynolds number is equivalent, the results are valid, whether a submerged water vehicle model is tested in air or an aerial vehicle is tested in water. For low Reynolds number flows, tunnels can be made to run oil instead of water. The advantage is tha (en)
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dcterms:subject	Scale modeling Hydrodynamics Model boats Physical models Ship design
Wikipage page ID	3573161 (xsd:integer)
Wikipage revision ID	1102401628 (xsd:integer)
Link from a Wikipage to another Wikipage	Pressure Rome David Taylor Model Basin Scale modeling Pennsylvania State University Reynolds number University of Genoa University of North Carolina at Charlotte University of Twente Visakhapatnam Viscosity Dynamometer St. John's, Newfoundland National Taiwan Ocean University Wave tank Emerson Cavitation Tunnel Garfield Thomas Water Tunnel Momentum Similitude (model) Zhongzheng District, Keelung Hydrodynamics Particle image velocimetry Stroboscope Australian Maritime College Trondheim Turkey Wageningen Da'an District, Taipei Wave flume East District, Tainan Fluid dynamics Norwegian University of Science and Technology Palakkad Carderock Division of the Naval Surface Warfare Center Cavitation Flow conditioning Propeller Model boats Istanbul Technical University Hydrofoil Physical models Kerala Blade pitch Taiwan Ship design Military Technical Institute Belgrade Nanzih District National Cheng Kung University National Kaohsiung Marine University National Research Council (Canada) National Taiwan University Pressure head Madras Submarine Sump pump Wind tunnel University of Newcastle upon Tyne Transportation in Taiwan Ship model basin MARIN (research)
Link from a Wikipage to an external page	http://www.epfl.ch http://mech.iitm.ac.in/html/home.php http://www.cehipar.es/cehiparweb/index.php%3Flang=english http://www.eldinc.com/cgi-bin/StandardWindTunnel.pl%3Fid=12 http://www.ipt.br/centros_tecnologicos/CTMNE/laboratorios_e_sessoes/35-laboratorio_de_engenharia_naval_e_oceanica___leno.htm http://www.measurementsci.com/products_flowLab.html http://www.rollinghillsresearch.com/Water_Tunnels/Model_0710.html http://lmh.epfl.ch http://www.fcriindia.com http://www.ntnu.edu/map/tyholt/cavitation-laboratory/

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