On the hydrodynamics of bobbing cones

OCEAN ENGINEERING

卷:36

Article

Drake, K. R.¹  Taylor, R. Eatock²  Taylor, P. H.²  Bai, W.³ 

[1] UCL, Dept Mech Engn, London WC1E 7JE, England

[2] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England

[3] Manchester Metropolitan Univ, Dept Comp & Math, Manchester M1 5GD, Lancs, England

关键词: Cone;    Flared body;    Transient oscillation;    Relative motion;    Potential flow;    Setup;   

DOI  :  10.1016/j.oceaneng.2009.07.007

来源: Elsevier

【 摘 要 】

The paper describes an experimental investigation into the hydrodynamics of a right circular cone undergoing transient forced vertical oscillations in otherwise still water. Attention is given to the vertical fluid force and the relative vertical motion between the cone and its intersection with the adjacent free water surface. Comparisons are made between linear theory and experimental results extracted from paired response time histories obtained with input displacements of opposite sign. Comparisons are also made with the predictions obtained from fully non-linear numerical models. A slowly varying setup is observed in the measured relative vertical motion and a new second order term is identified in order to formulate a theoretical explanation. (C) 2009 Elsevier Ltd. All rights reserved.

【 授权许可】

Free