A practical method for the prediction of cavitation on a propeller operating in a ship wake and hull surface pressure induced by a cavitating propeller is presented. In this method, the following items are applied: propeller part: the combination of Hanaoka-Koyama's unsteady lifting surface theory and corresponding 2-D wing theory. Cavitation part: linearized 2-D cavity theory applying the angle of attack and the local cavitation number derived from the propeller part. Hull surface pressure part: the application of the method of periodic source in place of cavity volume variation while a propeller blade is turning behind hull, moreover blade loading and blade thickness are included. In order to stand the practical use, correction factors on the cavitation part are adopted from 2-D cavitation test and actual ship observations. The predicted results on blade cavitation and hull surface pressure are compared with measured one, and the advantages of the method are discussed. (Wassmann)
Practical calculations for prediction of propeller cavitation and propeller induced hull surface pressure
Praktische Berechnungen zur Ermittlung der Propellerkavitation und des vom Propeller erzeugten Oberflaechendrucks auf dem Rumpf
Titel japanisch
Journal of the Society of Naval Architects of Japan ; 147 ; G2-70
1980
9 Seiten, 15 Bilder, 2 Tabellen, 12 Quellen
Aufsatz (Zeitschrift)
Japanisch
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