Oblique interactions of internal solitary waves in the lower atmosphere

doi:10.1063/5.0152770

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Oblique interactions of internal solitary waves in the lower atmosphere
	Li HY(李海艳); Hu L(胡磊); Yuan, Chunxin ; Wang Z(王展)
刊名	PHYSICS OF FLUIDS
	2023-07-01
卷号	35 期号:7 页码:76602
ISSN号	1070-6631
DOI	10.1063/5.0152770
英文摘要	Internal solitary waves frequently occur in the atmosphere. On rare occasions, they create the awe-inspiring spectacle known, for example, as the Morning Glory Clouds, a spectacular roll cloud, or series of roll clouds predictably appearing in the southern part of the Gulf of Carpentaria. Nevertheless, solitary wave-wave interactions have rarely been studied and documented; thus, we here focus on the long-time evolution of the superposition of two solitons featuring an X-shape and, more complicated, the interactions between three solitons initially posing as a Y-shape. To better understand the underlying dynamics of these phenomena, we derive a bidirectional and isotropic theoretical equation in a two-layer fluid system with variable bottom topography. This is accomplished by using its Hamiltonian structure and the Taylor expansion of the Dirichlet-Neumann operator for the potential theory. Essentially, the derived equation is an extension of the widely recognized Benjamin-Ono equation at two horizontal dimensions, and thereby, it possesses plane soliton solutions propagating in any horizontal direction. It is noted that the initial angles play an essential role in the oblique wave-wave interactions, manifested as the determination of waveforms, amplitudes, and the emergence of the Mach stem. In addition, the wave evolution is slightly modulated by the topographic effects, partly due to invoking the assumption of small topography.
分类号	一类/力学重要期刊
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:001023449800003
资助机构	National Natural Science Foundation of China [12132018, 91958206, 42006016]
其他责任者	Wang, Z (corresponding author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China. ; Wang, Z (corresponding author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92591]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.{Li, Haiyan, Hu, Lei, Wang, Zhan} Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.{Li, Haiyan, Wang, Zhan} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.{Yuan, Chunxin} Ocean Univ China, Sch Math Sci, Qingdao 266100, Peoples R China
推荐引用方式 GB/T 7714	Li HY,Hu L,Yuan, Chunxin,et al. Oblique interactions of internal solitary waves in the lower atmosphere[J]. PHYSICS OF FLUIDS,2023,35(7):76602.
APA	李海艳,胡磊,Yuan, Chunxin,&王展.(2023).Oblique interactions of internal solitary waves in the lower atmosphere.PHYSICS OF FLUIDS,35(7),76602.
MLA	李海艳,et al."Oblique interactions of internal solitary waves in the lower atmosphere".PHYSICS OF FLUIDS 35.7(2023):76602.