STUDY ON THE RELATION BETWEEN PROPULSION FACTORS AND VELOCITY FIELD OF FLOW IN THE PROPELLER BEHIND THE HULL
The grounding and break-up of the ARGO MERCHANT on the propulsion factors, which are effective wake factor, thrust deduction factor and relative rotative efficiency, and other elements of ship performance, and the non-uniform velocity field of flow in the propeller disk behind the hull. This is based on a calculation method employing a mathematical model of the hydrodynamical action of a propeller. This study has made it possible to understand the physical meanings of the effective wake and the relative rotative efficiency, and to consider the scale effects on all propulsion factors in a practical way. Subsequently the effects of the non-uniformity of flow on the propuslion factors have been made clear. When the wake pattern of the full scale ship is estimated by the Sasaiima-Tanaka method or other estimation method, the thrust, torque and power generated by the actual propeller behind the full scale ship can be predicted. The predicted results of a numerical example for a large oil tanker have shown a good agreement cleanup. The report also suggests that improvements in ship
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/0020868X
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Supplemental Notes:
- Read before the autumn meeting of Three Societies of Naval Architects of Japan, November 10-12, 1976.
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Corporate Authors:
International Periodical Press
193 Heemraadssingel
Rotterdam, Netherlands -
Authors:
- Ikehata, M
- Publication Date: 1977-5
Media Info
- Features: References;
- Pagination: p. 129-139
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Serial:
- International Shipbuilding Progress
- Volume: 24
- Issue Number: 273
- Publisher: IOS Press
- ISSN: 0020-868X
- Serial URL: http://www.iospress.nl/journal/international-shipbuilding-progress/
Subject/Index Terms
- TRT Terms: Nonuniform flow; Performance; Propulsion; Stresses; Thrust; Velocity; Wakes
- Uncontrolled Terms: Scale effect
- Old TRIS Terms: Propulsive performance; Thrust deduction; Velocity analysis; Wake induced stresses
- Subject Areas: Marine Transportation; Vehicles and Equipment;
Filing Info
- Accession Number: 00157867
- Record Type: Publication
- Source Agency: International Shipbuilding Progress
- Files: TRIS
- Created Date: Aug 4 1977 12:00AM