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Propulsion of an active flapping foil in heading waves of deep water

被引：15
|
作者：
Xu, G. D. [1 ]
Duan, W. Y. [1 ]
Zhou, B. Z. [1 ]
机构：
[1] Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Heilongjiang, Peoples R China
来源：
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS | 2017年 / 84卷
基金：
美国国家科学基金会;
关键词：
Flapping foil; Stokes waves; Frequency difference; Propulsive efficiency; OSCILLATING FOIL; POTENTIAL FLOW; PANEL METHOD; FREE-SURFACE; PERFORMANCE; SIMULATION; HYDROFOIL; THRUST; PLATE; MODEL;
D O I：
10.1016/j.enganabound.2017.08.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The propulsion of a flapping foil in heading waves has been investigated through the velocity potential theory. The trajectory of the flapping foil is prescribed with the combined sinusoidal heave and pitch motions. Boundary element method is introduced to solve the boundary value problem and a time stepping scheme is adopted to simulate the interaction of the foil and Stokes waves of infinite water-depth. The nonlinear free surface boundary conditions are imposed when updating the free surface. The effects of the frequency difference between foil motion and waves have been investigated. When the encountered wave frequency equals the flapping frequency, hydrodynamic performance of the flapping foil can be enhanced significantly. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：63 / 76
页数：14
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