Hydrodynamic forces and flow field characteristics of new conceptual artificial seabed under action of internal solitary waves

被引：0
|
作者：
Yao J.-J. [1 ]
Zhen X.-W. [1 ]
Duan Q.-Y. [1 ]
Huang Y. [1 ]
机构：
[1] School of Naval Architecture and Ocean Engineering, Dalian University of Technology, Dalian
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2024年 / 28卷 / 06期
关键词：
hydrodynamic force; internal solitary wave; new conceptual artificial seabed; numerical wave-making; test verification;
D O I：
10.3969/j.issn.1007-7294.2024.06.002
中图分类号：
学科分类号：
摘要：
The new conceptual artificial seabed can effectively improve the adaptability of disastrous marine environmental factors such as strong winds, huge waves and surface currents, but the considerable impact force generated by internal solitary waves is a key factor affecting the operation safety of the artificial seabed. This paper presents a study on hydrodynamic forces and flow field characteristics of the new conceptual artificial seabed under the action of internal solitary waves. First of all, the eKdV equation was used as the theoretical model. A three-dimensional numerical flume was established by using the wave-making method of velocity inlet, and the numerical wave-making of internal solitary waves was achieved. On this basis, the numerical waveform was compared with the theoretical and experimental waveforms, and the feasibility of the numerical method was verified. Finally, hydrodynamic forces exerted by internal solitary waves on the artificial seabed were calculated, the characteristics of forces induced by internal solitary waves of various amplitudes on the artificial seabed were studied in detail. Besides, the velocity field and the vorticity field around the artificial seabed were analyzed. The results show that, with the increase of the amplitude of the internal solitary wave, the drag force, vertical force and lift force on the artificial seabed gradually increase, and the drag force and vertical force are much greater than the lift force. When the internal solitary wave passes through the artificial seabed, both the particle velocity of the fluid and the vortex intensity around the artificial seabed increase. This study provides an effective numerical calculation method for the prediction of internal solitary wave forces and the analysis of flow field characteristics of large underwater engineering structures. © 2024 China Ship Scientific Research Center. All rights reserved.
引用
收藏
页码：818 / 831
页数：13
相关论文
共 29 条
  • [1] Zhen X W, Huang Y., Parametric study on the behavior of an innovative subsurface tension leg platform in ultra-deep water, China Ocean Engineering, 31, 5, pp. 589-597, (2017)
  • [2] Zhen X W, Han Y, Huang Y, Et al., Analytical approach for the establishment of critical length criterion for the safe and economical design of the flexible jumper in deepwater applications, Applied Ocean Research, 75, pp. 193-200, (2018)
  • [3] Zhen X W, Huang Y, Zhang Q., Investigation on the mechanical behavior of an innovative subsurface tension leg platform in ultra-deep water (Part I), Journal of Ship Mechanics, 22, 3, pp. 311-324, (2018)
  • [4] Zhen X W, Wu J H, Huang Y, Et al., Parametric dimensional analysis on the structural response of an innovative subsurface tension leg platform in ultra-deep water, China Ocean Engineering, 32, 4, pp. 482-489, (2018)
  • [5] Zhen X W, Vinnem J E, Han Y, Et al., New risk control mechanism for innovative deepwater artificial seabed system through online risk monitoring system, Applied Ocean Research, 95, pp. 1-9, (2020)
  • [6] Ding W Y, Ai C F, Jin S, Et al., Numerical investigation of an internal solitary wave interaction with horizontal cylinders, Ocean Engineering, 208, pp. 1-15, (2020)
  • [7] Zhang Ruirui, Zhang Xinshu, You Yunxiang, Et al., Numerical study for load characteristics of internal solitary waves on the FPSO, Journal of Ship Mechanics, 23, 8, pp. 906-916, (2019)
  • [8] Wang Yin, Shen Huolin, Wang Lingling, Et al., Research on force mechanism of cylinder under different internal solitary wave amplitudes conditions, Journal of Nanchang Institute of Technology, 40, 1, pp. 13-19, (2021)
  • [9] Xie Huarong, Xiong Xuejun, Chen Liang, Calculation of the maximal force exerted by internal solitary waves on piles in slope area of the northern South China Sea, Advances in Marine Science, 37, 2, pp. 171-186, (2019)
  • [10] Cheng M H, Hwang R R, Hsieh C M., Numerical study on the transformation of an internal solitary wave propagating across a vertical cylinder[J], Applied Ocean Research, 95, 2, (2020)
123