[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.3744/JNAOE.2011.3.3.201

Computation of the inviscid drift force caused by nonlinear waves on a submerged circular cylinder

Koh, Hyeok-Jun (Multidisciplinary Graduate School for Wind Energy, Jeju National University)
Cho, Il-Hyoung (Department of Ocean System Engineering, Jeju National University)

Publication Information

International Journal of Naval Architecture and Ocean Engineering / v.3, no.3, 2011 , pp. 201-207 More about this Journal

Abstract

In this paper, we focused on computing the higher-harmonic components of the transmitted wave passing over a submerged circular cylinder to show that it is causing a horizontal negative drift force. As numerical models, a circular cylinder held fixed under free surface in deep water is adopted. As the submergence of a circular cylinder decreases and the incident wavelength becomes longer, the higher-harmonic components of the transmitted wave starts to increase. An increase of the higher-harmonic components of the transmitted wave makes the horizontal drift force be negative. It is also found that the higher-harmonic amplitudes averaged over the transmitted wave region become larger with the increase of wave steepness and wavelength as well as the decrease of submergence depth.

Keywords

Higher-harmonic component; Numerical wave tank; Drift force; Fully nonlinear potential flow; Transmitted wave;

Citations & Related Records

Times Cited By Web Of Science : 0 (Related Records In Web of Science)

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