NUMERICAL STUDIES OF INTERNAL SOLITARY WAVE GENERATION AND EVOLUTION BY GRAVITY COLLAPSE

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	NUMERICAL STUDIES OF INTERNAL SOLITARY WAVE GENERATION AND EVOLUTION BY GRAVITY COLLAPSE
	Lin Zhen-hua 1; Song Jin-bao
刊名	JOURNAL OF HYDRODYNAMICS
	2012-09-01
卷号	24 期号:4 页码:541-553
关键词	gravity collapse internal wave energy analysis
ISSN号	1001-6058
通讯作者	Lin, ZH (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
英文摘要	In this study, an analysis on the internal wave generation via the gravity collapse mechanism is carried out based on the theoretical formulation and the numerical simulation. With the linear theoretical model, a rectangle shape wave is generated and propagates back and forth in the domain, while a two-dimensional non-hydrostatic numerical model could reproduce all the observed phenomena in the laboratory experiments conducted by Chen et al. (2007), and the related process realistically. The model results further provide more quantitative information in the whole domain, thus allowing an in depth understanding of the corresponding internal solitary wave generation and propagation. It is shown that the initial type of the internal wave is determined by the relative height between the perturbation and the environmental density interface, while the final wave type is related to the relative height of the upper and lower layers of the environmental fluid. The shape of the internal wave generated is consistent with that predicted by the KdV and EKdV theories if its amplitude is small, as the amplitude becomes larger, the performance of the EKdV becomes better after the wave adjusts itself to the ambient stratification and reaches an equilibrium state between the nonlinear and dispersion effects. The evolution of the mechanical energy is also analyzed.
学科主题	Mechanics
收录类别	SCI
原文出处	10.1016/S1001-6058(11)60276-X
语种	英语
WOS记录号	WOS:000308803200009
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/12176]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Lin Zhen-hua,Song Jin-bao. NUMERICAL STUDIES OF INTERNAL SOLITARY WAVE GENERATION AND EVOLUTION BY GRAVITY COLLAPSE[J]. JOURNAL OF HYDRODYNAMICS,2012,24(4):541-553.
APA	Lin Zhen-hua,&Song Jin-bao.(2012).NUMERICAL STUDIES OF INTERNAL SOLITARY WAVE GENERATION AND EVOLUTION BY GRAVITY COLLAPSE.JOURNAL OF HYDRODYNAMICS,24(4),541-553.
MLA	Lin Zhen-hua,et al."NUMERICAL STUDIES OF INTERNAL SOLITARY WAVE GENERATION AND EVOLUTION BY GRAVITY COLLAPSE".JOURNAL OF HYDRODYNAMICS 24.4(2012):541-553.