Frontal collision of internal solitary waves of first mode SCIE SCOPUS

Cited 1 time in WEB OF SCIENCE Cited 3 time in Scopus
Title
Frontal collision of internal solitary waves of first mode
Author(s)
Terletska, K.; Jung, K. T.; Maderich, V.; Kim, K. O.
KIOST Author(s)
Kim, Kyeong Ok(김경옥)
Publication Year
2018-03
Abstract
The dynamics and energetics of a frontal collision of internal solitary waves (ISW) of first mode in a fluid with two homogeneous layers separated by a thin interfacial layer are studied numerically within the framework of the Navier-Stokes equations for stratified fluid. It was shown that the head-on collision of internal solitary waves of small and moderate amplitude results in a small phase shift and in the generation of dispersive wave train travelling behind the transmitted solitary wave. The phase shift grows as amplitudes of the interacting waves increase. The maximum run-up amplitude during the wave collision reaches a value larger than the sum of the amplitudes of the incident solitary waves. The excess of the maximum run-up amplitude over the sum of the amplitudes of the colliding waves grows with the increasing amplitude of interacting waves of small and moderate amplitudes whereas it decreases for colliding waves of large amplitude. Unlike the waves of small and moderate amplitudes collision of ISWs of large amplitude was accompanied by shear instability and the formation of Kelvin-Helmholtz (KH) vortices in the interface layer, however, subsequently waves again become stable. The loss of energy due to the KH instability does not exceed 5%-6%. An interaction of large amplitude ISW with even small amplitude ISW can trigger instability of larger wave and development of KH billows in larger wave. When smaller wave amplitude increases the wave interaction was accompanied by KH instability of both waves. (C) 2017 Elsevier B.V. All rights reserved.
ISSN
0165-2125
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1008
DOI
10.1016/j.wavemoti.2017.12.006
Bibliographic Citation
WAVE MOTION, v.77, pp.229 - 242, 2018
Publisher
ELSEVIER SCIENCE BV
Subject
HEAD-ON COLLISION; 2-FLUID SYSTEM; FREE-SURFACE; INSTABILITY; ENERGY; FLOWS
Keywords
Internal solitary waves; Head-on collision; Numerical modelling; Phase shift; Kelvin-Helmholtz instability
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCIENCE BV
Related Researcher
Research Interests

Coastal Engineering,Marine Environment Model,Coastal Disaster Model,해안공학,해양환경모델링,해안재해모델

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse