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Numerical investigation of wake-collapse internal waves generated by a submerged moving body
- Journal of Oceanology and Limnology Vol. 35, Issue 4, Pages: 967-977(2017)
- 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：
DOI：10.1007/s00343-017-6041-5
CLC：-
Online First：08 September 2016，
Published：2017
- Accepted：
Scan QR Code
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
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.
关键词
Keywords
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