Theoretical investigation of the wake duct effectiveness

• Autorzy: Tabaczek T.
• Języki publikacji: EN

Abstrakty

EN

The effectiveness of cylindrical and elliptical wake ducts was investigated by using the theoretical methods. The method of surface vorticity distribution was applied to determine the velocity and pressure distributions on the surface of wake ducts in non-uniform stern flow. This method accounts for actual geometry of duct and hull surface with no simplifications. Velocity distribution at meridional sections of a duct was used in calculation of boundary layer parameters in accordance with the Turckenbrodt method. Relative effectiveness of different ducts was evaluated for a specific ship on the basis of the generated thrust and extent of flow separation.

Słowa kluczowe

EN

naval architecture

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 1998
• Tom: nr 3
• Strony: 6--9
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Tabaczek T.

• Wrocław University of Technology Institute of Machine Design and Operation [Politechnika Wrocławska]

Bibliografia

• 1. XianR: „Strömungsmechanische Untersuchung der Zustromdüse". Doktor-Ingenieur Dissertation. Fakultät für Maschinenwesen der Rheinisch-Westfälischen Hochschule. Aachen, 1989.
• 2. Martensen E.: „Die Berechnung der Druckverteilung an dicken Gitterprofilen mit Hilfe von Fredholmschen Integralgleichungen Zweiter Art". Arch. Rat. Mech. Anal., 1959, No 3.
• 3. Lewis R. L, Ryan P. G.: „Surface vorticity theory for axisymmetric potential flow past annular aerofoils and bodies of revolution with application to ducted propellers and cowls". J. Mech. Eng. Science, 1972, No 14.
• 4. Tabaczek X: „Modelling of flow around wake ducts with application of surface vorticity distribution". Ph. D. dissertation. Institute of Machine Design and Operation, Wroclaw University of Technology. 1996 (in Polish).
• 5. Kulczyk J., Tabaczek T: „Computational model for calculation of ducted propeller performance in entire forward operating conditions range". Fourth International Symposium on Practical Design of Ships and Mobile Units PRADS'89. Vama, October 1989.
• 6. Scholz N.: „Aerodynamik der Schaufelgitter". Bd. 1, Verlag G. Braun. Karlsruhe, 1965.