Loading due to interaction of waves with colinear and oblique currents

OCEAN ENGINEERING

卷:81

Article

Zaman, M. Hasanat¹  Baddour, Emile¹ 

[1] Natl Res Council Canada, St John, NF A1B 3T5, Canada

关键词: 3D wave-current field;    Superposition model;    Wave-current loading;    Moments;   

DOI  :  10.1016/j.oceaneng.2014.02.005

来源: Elsevier

【 摘 要 】

A study on the loading of an oblique surface wave and a surface current field on a fixed vertical slender cylinder in a 3D flow frame is illustrated in the present paper. The three dimensional expressions describing the characteristics of the combined wave-current field in terms of mass, momentum and energy flux conservation equations are formulated. The parameters before the interaction of the oblique wave-free uniform current and current-free wave are used to formulate the kinematics of the flow field. These expressions are also employed to formulate and calculate the loads imparted by the wave-current combined flow on a bottom mounted slender vertical cylinder. In the present study two different situations are assumed where current is uniform over depth and also acting over a layer of fluid that extends from the free surface to a specified finite depth. In this paper we extend the approach considered in Zaman and Baddour (2004) for the wave-current analysis. Morison et al. (1950) equation is deployed for the load computations in all cases. The above models are utilized to compute the loads and moments on a slender cylinder for a wave with varying range of incidence current field. Crown Copyright (C) 2014 Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free