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Emerson Cavitation Tunnel
The Emerson Cavitation Tunnel is a propeller testing facility based at Newcastle University, UK. The tunnel is based in the department of Marine Science and Technology, and is currently the second largest cavitation tunnel in the UK, the largest being that owned by the Ministry of Defence at Haslar.
== Capabilities ==
The Emerson Cavitation Tunnel consists of a water circuit which flows in the vertical plane, within which propellers and other propulsion devices can be tested. The system is powered by a pump, with a four-bladed impeller and can produce a maximum water velocity of . The test area has a cross sectional area of allowing model propellers of up to in diameter to be tested. The pressure range of the tunnel can vary from a minimum of 7.6 kN/m2 to a maximum of 106 kN/m2. Cavitation numbers of 0.5 (minimum) to 23 (maximum) can be accommodated for. Measurements can be taken using a 3 Watt, water-cooled, Argon-ion laser, a hydrophone, and two dynamometers. A high-speed video camera is also attached with an imaging frequency of 0–50 frames per second.
Funding for the tunnel's equipment is raised by numerous organisations, including the Engineering and Physical Sciences Research Council (EPSRC) and the Scottish Universities of Glasgow and Strathclyde.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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