Numerical studies on the degeneration of internal waves induced by an initial tilted pycnocline

doi:10.1007/s13131-014-0503-9

IOCAS-IR > 海洋环流与波动重点实验室

	Numerical studies on the degeneration of internal waves induced by an initial tilted pycnocline
	Lin Zhenhua 1,2; Song Jinbao 1,2; Lin, ZH (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
	2014-07-01
发表期刊	ACTA OCEANOLOGICA SINICA
卷号	33 期号:7 页码:27-39
文章类型	Article
摘要	The pycnocline in a closed domain is tilted by external wind forcing and tends to restore to a level position when the wind falls. An internal seiche oscillation exhibits if the forcing is weak, otherwise internal surge and internal solitary waves emerge, which serve as a link to cascade energy to small-scale processes. A two-dimensional non-hydrostatic code with a turbulence closure model is constructed to extend previous laboratory studies. The model could reproduce all the key phenomena observed in the corresponding laboratory experiments. The model results further serve as a comprehensive and reliable data set for an in-depth understanding of the related dynamical process. The comparative analyses indicate that nonlinear term favors the generation of internal surge and subsequent internal solitary waves, and the linear model predicts the general trend reasonably well. The vertical boundary can approximately reflect all the incoming waves, while the slope boundary serves as an area for small-scale internal wave breaking and energy dissipation. The temporal evolutions of domain integrated kinetic and potential energy are also analyzed, and the results indicate that about 20% of the initial available potential energy is lost during the first internal wave breaking process. Some numerical tactics such as grid topology and model initialization are also briefly discussed.
关键词	Internal Wave Numerical Model Wave Breaking Energy Dissipation
学科领域	Oceanography
DOI	10.1007/s13131-014-0503-9
收录类别	SCI
语种	英语
WOS记录号	WOS:000338098400004
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/23951
专题	海洋环流与波动重点实验室
通讯作者	Lin, ZH (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, KLOCAW, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Lin Zhenhua,Song Jinbao,Lin, ZH . Numerical studies on the degeneration of internal waves induced by an initial tilted pycnocline[J]. ACTA OCEANOLOGICA SINICA,2014,33(7):27-39.
APA	Lin Zhenhua,Song Jinbao,&Lin, ZH .(2014).Numerical studies on the degeneration of internal waves induced by an initial tilted pycnocline.ACTA OCEANOLOGICA SINICA,33(7),27-39.
MLA	Lin Zhenhua,et al."Numerical studies on the degeneration of internal waves induced by an initial tilted pycnocline".ACTA OCEANOLOGICA SINICA 33.7(2014):27-39.

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