English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26988/38789
Visitors : 2317659      Online Users : 35
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41345

Title: Numerical study on evolution of an internal solitary wave across an idealized shelf with different front slopes
Authors: Chih-Min Hsieh;Ming-Hung Cheng;Robert R. Hwang;John R.-C. Hsu
Contributors: 國立臺灣海洋大學:系統工程暨造船學系
Keywords: Internal solitary wave;RANS equation;k-ε turbulent model;Flow field;Vortices;Turbulent kinetic budget
Date: 2016-09
Issue Date: 2017-02-14T07:48:28Z
Publisher: Applied Ocean Research
Abstract: Abstract:Numerical simulations are performed to investigate the influence of variable front slopes on flow evolution and waveform inversion of a depression ISW (internal solitary wave) over an idealized shelf with variable front slopes. A finite volume based on Cartesian grid method is adopted to solve the Reynolds averaged Navier-Stokes equations using a k-ε model for the turbulent closure. Numerical results exhibit the variations of several pertinent properties of the flow field, in the case with or without waveform inversion on the horizontal plateau of an obstacle. The clockwise vortex is stronger than the counterclockwise one, almost throughout the wave-obstacle interaction. Analysis of the turbulent energy budget reveals that the turbulent production term in the governing equations dominates the wave evolution during a wave-obstacle interaction; otherwise the buoyancy production term and the dissipation term due to viscosity within turbulent eddies play a major role in energy dissipation. In addition, the front slope affects mainly the process and reflection of the wave evolution but has less influence than other physical parameters. Moreover, total wave energy of the leading crest is smaller than that of the leading trough even in the cases with waveform inversion on the plateau.
Relation: 59,pp.236-253
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41345
Appears in Collections:[系統工程暨造船學系] 期刊論文

Files in This Item:

File Description SizeFormat
index.html0KbHTML58View/Open


All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback