ON SOME ASPECTS OF DESIGN OF SUPERCAVITATING FOILS AND PROPELLERS. VARIATION AND ASYMPTOTIC APPROACH
The problems of the flow of ideal incompressible fluid past cavitating foils and supercavitating screw propellers were treated on the basis of the Artificial Variation Problem (AVP) method and method of Matched Asymptotic Expansions (MAE) as the problems with unknown free boundaries and at the same time with domains of the singularly perturbations. The AVP method enables to substitute the differential or integral equation (system of equations) problem by the equivalent variation problem for the same unknown functions, which bring minimum value to the some functional. This functional can be disconnected with any physical characteristics of described object and minimization of this functional can be disconnected with optimization process for these characteristics. The matching procedure of asymptotic solutions obtained in the frames of MAE method in the outer and inner regions enabled to define nonlinear corrections and to obtain the numerical results which are in good agreement with experimental data.
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Supplemental Notes:
- PROPCAV '95, Intl Conf on Propeller Cavitation Research; 16- 18 May; Newcastle upon Tyne, UK. Sponsored by Univ of Newcastle upon Tyne, UK, et al. Pprs. Publ by Penshaw Press, Sunderland, UK, ISBN 0-9518806-4; p 163 [12 p, 17 ref, 1 tab, 5 fig]
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Authors:
- Achkinadze, A S
- Fridman, G M
- Publication Date: 1995
Language
- English
Subject/Index Terms
- TRT Terms: Asymptotic expansion; Cavitation (Mechanics); Cavitation erosion; Propellers; Supercavitating propellers
- Subject Areas: Marine Transportation; Vehicles and Equipment;
Filing Info
- Accession Number: 00717267
- Record Type: Publication
- Source Agency: British Maritime Technology
- Files: TRIS
- Created Date: Mar 4 1996 12:00AM