RESEARCH ON PROPELLER HULL INTERACTION AND ASSOCIATED VIBRATION
At a recent three-day symposium organised by the Royal Institution of Naval Architects a joint paper was presented giving a general view on the character and progress of UK research into propeller-hull interaction and associated ship vibration. The achievements so far can be summarised as follows: The crucial significance of pressure forces on the hull, generated by unsteady cavitation has been demonstrated and a considerable understanding of the factors determining this cavitation has been reached. Methods of estimating the excitation forces, mostly by empirical rules, and the structural responses, by both calculations and empirical rules, have been developed. They are available as useful tools at those stages in the design process where changes are still possible. Experimental methods of checking any specific design, particularly by cavitation tests, have been developed to reasonable reliability. In the current joint project, advances are being made especially in the preparation of more comprehensive computer programs for calculating wake flow and propeller cavitation with the support of both basic and specific experiments to ensure a sound foundation and a valid check. Again, these will be available for application in the early design.
- Copies of the Symposium proceedings containing complete papers, discussions and authors' replies will be available only from: The Royal Institution of Naval Architects, 10 Upper Belgrave Street, London SW1X 8BQ.
British Ship Research AssociationWallend Research Station
- Publication Date: 1980-4
- Pagination: p. 2-3
- BSRA News
- Publisher: British Ship Research Association
- TRT Terms: Cavitation (Mechanics); Cavitation erosion; Computer programs; Excitation; Hulls; Mathematical analysis; Mathematical models; Propellers; Structural analysis; Structural mechanics; Vibration; Wakes
- Uncontrolled Terms: Structural response
- Old TRIS Terms: Computer programs (Propellers); Hull propeller interaction; Hull vibration; Propeller excitation; Propeller induced vibration; Wake analysis
- Subject Areas: Marine Transportation; Vehicles and Equipment;
- Accession Number: 00312476
- Record Type: Publication
- Files: TRIS
- Created Date: Jul 22 1980 12:00AM