HYDRODYNAMIC LOADS AND DYNAMIC EFFECTS OF CAVITATION ON ICE CLASS PROPELLERS IN SIMULATED ICE BLOCKED FLOW
A series of tests were done in a cavitation tunnel using ice class propellers. The propellers were run in the wake of a nearby simulated ice blockage with a gap of approximately one millimetre between the propeller and the blockage simulating the hydrodynamic conditions of blockage subsequent to a partial milling of an ice piece. Measurements taken during various experiments included static and dynamic thrust and torque, duct thrust and fluid pressure on the face of the block adjacent to the propeller. The types of cavitation, its erosive character and intermittent nature over the cycle of operation were recorded. The effect of cavitation during blockage was a reduction of mean values of thrust and torque and an associated increase in the dynamic oscillation about the mean value.
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Supplemental Notes:
- Propellers/Shafting '94 Symposium; 20-21 Sept 1994; Virginia Beach, VA, USA. Sponsored and Publ by SNAME, USA. Pprs. Ppr no 20 [19 p, 13 ref, 3 tab, 22 fig]
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Authors:
- Walker, D
- Publication Date: 1994
Language
- English
Subject/Index Terms
- TRT Terms: Cavitation (Mechanics); Cavitation erosion; Ice; Propellers
- Old TRIS Terms: Hydrodynamic loads; Propeller ice interaction
- Subject Areas: Marine Transportation; Vehicles and Equipment;
Filing Info
- Accession Number: 00717711
- Record Type: Publication
- Source Agency: British Maritime Technology
- Files: TRIS
- Created Date: Mar 4 1996 12:00AM