The Added Mass Coefficient computation of sphere, ellipsoid and marine propellers using Boundary Element Method

• Autorzy: Ghassemi H. , Yari E.
• Języki publikacji: EN

Abstrakty

EN

Added mass is an important and effective dynamic coefficient in accelerating, non uniform motion as a result of fluid accelerating around a body. It plays an important role, especially in vessel roll motion, control parameters as well as in analyzing the local and global vibration of a vessel and its parts like propellers and rudders. In this article, calculating the Added Mass Coefficient has been examined for a sphere, ellipsoid, marine propeller and hydrofoil; using numerical Boundary Element Method. Since an Ellipsoid and a sphere have simple geometric shapes and the Analytical values of their added mass coefficients are available, so that the results of added mass matrix are obtained and evaluated, using the boundary element method. Then the added mass matrix is computed in a given geometrical and flow specifications for a specific propeller and its results are studied versus experimental results, which it’s current numerical data In comparison with other numerical methods has a good conformity with experimental results. The most important advantage of the method in determining the added mass matrix coefficients for the surface and underwater vessels and the marine propellers is extracting all the added mass coefficients with very good Accuracy, while in other numerical methods it is impossible to extract all the coefficients with the Desired Accuracy

• Wydawca: -
• Czasopismo: Polish Maritime Research
• Rocznik: 2011
• Tom: 18
• Numer: 1
• Opis fizyczny: p.17-26,fig.,ref.

Twórcy

autor

Ghassemi H.

• Faculty of Marine Technology, Amirkabir University of Technology, Hafez Ave., Teheran, Iran

autor

Yari E.

• Fakulty of Marine Engineering, Malekashtar University of Technology, Shahinshar, Isfahan, Iran

Bibliografia

• 1. Newman, John Nicholas: Marine hydrodynamics. Cambridge, Massachusetts, MIT Press. ISBN: 0-262-14026-8 §4.13, p. 139, 1977
• 2. Birkhoff, G.: Hydrodynamics. Princeton Univ. Press, Princeton, 1960
• 3. Lamb, G.: Hydrodynamics. Cambridge University Press, Cambridge, 1932
• 4. Kochin, N.E., Kibel, I.A., Rose, N.V.: Theoretical Hydromechanics, Parts I and II. State Publisher of Physical and Mathematical Literature, Moscow, in Russian, 1963
• 5. Taylor, J.L.: Some hydrodynamical inertia coefficients. Phil. Mag. Ser. 7 9(55), 161-183, 1930
• 6. Alexandr I. Korotkin: Added mass of ship structure. Fluid mechanics and its applications, Volume 88, 2009
• 7. John T. Katsikadelis: Boundary Elements, Theory and Applications, Elsevier Science Ltd, 2002
• 8. Kinnas S.A. and Hsin C.Y.: Boundary Element Method for the Analysis of the Unsteady Flow around Extreme Propeller Geometry. IAA, Journal, 30 (3), 1992
• 9. Hess J.T, Smith A.M.: Lecture 3 AA200b January 13-18, 2005
• 10. Hess J.T, Smith A.M.: Calculation of nonlifting potential flow about arbitrary three-dimensional bodies. Journal of Ship Research, 8(2), 1964
• 11. Morino L. and Kuo C.C.: Subsonic Potential Aerodynamics for Complex Configuration: A general Theory. AIAA Journal, 12 (2), 191-197, 1974
• 12. Olivier Saout.: Computation of Hydrodynamic Coefficients and Determination of Dynamic Stability Characteristics of an Underwater Vehicle Including Free Surface Effects. Ms Thesis,Florida Atlantic University, May 2003
• 13. Young-Joong Kim, Hyun Yup Lee and Chang-Sup Lee: The Added Mass and Damping for the Axial Rigid Body Motion of a Marine Propeller Rotating in a Uniform Flow. Journal of the Society of Naval Architects of Korea, Vol. 45, No. 3, pp. 309-314, June 2008
• 14. Donald M. MacPherson and Vincent R. Puleo and Matthew B. Packard, Estimation of Entrained Water Added Mass Properties for Vibration Analysis, SNAME New England Section, June 2007.

Identyfikatory

DOI

10.2478/v10012-011-0003-1