Numerical investigation of wake-collapse internal waves generated by a submerged moving body

Jianjun Liang; Tao Du; Weigen Huang; Mingxia He

doi:10.1007/s00343-017-6041-5

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Numerical investigation of wake-collapse internal waves generated by a submerged moving body

OriginalPaper | Updated：2023-05-16

- Numerical investigation of wake-collapse internal waves generated by a submerged moving body
- Numerical investigation of wake-collapse internal waves generated by a submerged moving body
- 海洋湖沼学报（英文） 2017年35卷第4期页码：967-977
- Affiliations：
  
  1. Ocean Remote Sensing Institute Ocean University of China
  2. College of Oceanic and Atmospheric Sciences Ocean University of China
  3. Second Institute of Oceanography State Oceanic Administration
- Author bio：
- Funds：
  
  Supported by the State Key Program of National Natural Science of China (No. 60638020)
- DOI：10.1007/s00343-017-6041-5
  中图分类号：
- 网络首发：2016-09-08，
  
  纸质出版：2017
- Accepted：
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Numerical investigation of wake-collapse internal waves generated by a submerged moving body[J]. 海洋湖沼学报（英文）, 2017,35(4):967-977.

Liang, J., Du, T., Huang, W. et al. Numerical investigation of wake-collapse internal waves generated by a submerged moving body., Chin. J. Ocean. Limnol. 35, 967–977 (2017). https://doi.org/10.1007/s00343-017-6041-5
Numerical investigation of wake-collapse internal waves generated by a submerged moving body[J]. 海洋湖沼学报（英文）, 2017,35(4):967-977. DOI： 10.1007/s00343-017-6041-5.

Liang, J., Du, T., Huang, W. et al. Numerical investigation of wake-collapse internal waves generated by a submerged moving body., Chin. J. Ocean. Limnol. 35, 967–977 (2017). https://doi.org/10.1007/s00343-017-6041-5 DOI：

摘要

Abstract

The state-of-the-art OpenFOAM technology is used to develop a numerical model that can be devoted to numerically investigating wake-collapse internal waves generated by a submerged moving body. The model incorporates body geometry

propeller forcing

and stratification magnitude of seawater. The generation mechanism and wave properties are discussed based on model results. It was found that the generation of the wave and its properties depend greatly on the body speed. Only when that speed exceeds some critical value

between 1.5 and 4.5 m/s

can the moving body generate wake-collapse internal waves

and with increases of this speed

the time of generation advances and wave amplitude increases. The generated wake-collapse internal waves are confirmed to have characteristics of the second baroclinic mode. As the body speed increases

wave amplitude and length increase and its waveform tends to take on a regular sinusoidal shape. For three linearly temperature-stratified profiles examined

the weaker the stratification

the stronger the wake-collapse internal wave.

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references

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