CIRCULATING WATER CHANNELS AND CAVITATION TUNNELS

MARINE DYNAMICS AND SHIP LABORATORY, CANADA NATIONAL RESEARCH COUNCIL, Bldg . M-22, OTTAWA, ONTARIO., K1A OR6. (613) 993-2288 Telex 053-3386

CAVITATION TUNNEL (1957)

DESCRIPTION OF FACILITY: Kempf & Remmers, vert. plane, closed recirc. TYPE OF DRIVE SYSTEM: 4-bladed axial flow impeller with Ward-Leonard control TOTAL MOTOR POWER: 56 kW, 1500 rpm WORKING SECTION MAX. VELOCITY: 12 m/s MAX. & MIN. ABS. PRESSURES: 200 kPa, 5.7 kPa CAVITATION NUMBER RANGE: sigma = 0.8 to 3.0 for J = 0.5 to 1.5

INSTRUMENTATION: propeller dynamometer, 3-component balance, 5-hole pitot tube . various pressure sensors TYPE AND LOCATION OF TORQUE & THRUST DYNAM, : sealed strain gage dynamometer mounted between propeller and first shaft bearing TRange: -900N ~ +900N QRange: -45Nm ~ +45Nm PROPELLER OR MODEL SIZE RANGE: diameters from 13O to 250 mm, 200 mm typical TESTS PERFORMED: (1) propeller tests in uniform & non-uniform flows. (2) forces and pressure distributions on rudders. fins , hydrofoils, cable fairings, submerged bodies. etc.

PUBLISHED DESCRIPTION: NRC Report MB-251