Experimental investigation on the kinematics characteristic of submerged slender body under internal solitary wave of depression

被引：0
|
作者：
Du H. [1 ]
Wei G. [1 ]
Zeng W.-H. [1 ]
Wu J.-L. [1 ]
You Y.-X. [2 ]
机构：
[1] College of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing
[2] State Key Laboratory of Ocean Eng., Shanghai Jiaotong University, Shanghai
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2017年 / 21卷 / 10期
关键词：
Internal solitary wave; Kinematics characteristic; Stratified fluid; Submerged slender body;
D O I：
10.3969/j.issn.1007-7294.2017.10.004
中图分类号：
学科分类号：
摘要：
In this paper, the experimental study on the kinematics characteristic of submerged slender body under internal solitary wave of depression generated by gravity-collapse method is conducted in a largely gravitational stratified fluid tank, in which a semi-flexible restriction technique is used to control the slender body's equilibrium in the density stratification fluid. The quantitative measurement on the motions of slender body is carried out with both experimental displacement analysis and angel inclination instruments, and further the kinematic characteristics such as heave, surge, roll, pitch and its mass center trace are obtained. Experimental results show that the movement locus of the body's mass center is close to an oval. All of properties such as heave, surge, roll and pitch are depended of the dimensionless wave amplitude factor α(the ratio of wave amplitude to slender body's length) and the body position in depth. The surge movement of the slender body above or below the solitary internal wave is predominant as the parameter αkeeps unchanged and its heave one of the body across the wave is predominant. It is further verified that the body's movement characteristic related to the inner flow in an internal solitary wave. © 2017, Editorial Board of Journal of Ship Mechanics. All right reserved.
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页码：1210 / 1217
页数：7
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