Page 1 |
Save page Remove page | Previous | 1 of 208 | Next |
|
small (250x250 max)
medium (500x500 max)
Large (1000x1000 max)
Extra Large
large ( > 500x500)
Full Resolution
All (PDF)
|
This page
All
|
WAVE INDUCED HYDRODYNAMIC COMPLEXITY AND TRANSPORT IN
THE NEARSHORE
by
Sangyoung Son
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(CIVIL ENGINEERING)
August 2012
Copyright 2012 Sangyoung Son
Object Description
| Title | Wave induced hydrodynamic complexity and transport in the nearshore |
| Author | Son, Sangyoung |
| Author email | sangyous@usc.edu;sonsiest@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Civil Engineering |
| School | Viterbi School of Engineering |
| Date defended/completed | 2012-06-11 |
| Date submitted | 2012-07-25 |
| Date approved | 2012-07-25 |
| Restricted until | 2014-07-25 |
| Date published | 2014-07-25 |
| Advisor (committee chair) | Lynett, Patrick J. |
| Advisor (committee member) |
Lee, Jiin-Jen Redekopp, Larry G. |
| Abstract | In the coastal area, defined as the region between the shoreline and some offshore limit where the depth can no longer influence the waves, complex behavior of waves is anticipated due to various physical effects such as turbulence, wave-structure interaction, wave-current interaction, wave breaking and fluid-density variations. For modeling of nearshore hydrodynamics, many numerical models have been developed so far, but many of such effects are not yet considered appropriately. ❧ In this dissertation, depth-integrated numerical models used in long wave simulation are developed for better understanding of complicated hydrodynamics at the nearshore. First, a non-dispersive shallow water equation model and dispersive Boussinesq model are two-way coupled. The fundamental purpose of the coupling effort is to develop the capability to seamlessly model long wave evolution from deep to shallow water with fine scale resolution, without the loss of locally important physics. Second, a set of depthintegrated equations describing combined wave-current flows are derived mathematically and discretized numerically. To account for the effect of turbulent interaction between waves and underlying currents with arbitrary profile, new additional stresses are introduced, which represent radiation stress of waves over the ambient current field. Finally, a numerical model for gravity waves propagating over variable density fluids is developed by allowing horizontal and vertical variation of fluid density. Throughout the derivation, density change effects appear as correction terms while the internal wave effects on the free surface waves in a two-layer system are accounted for through direct inclusion of the internal wave velocity component. For each of the studied topics, numerical tests are performed to support accuracy and applicability. Consequently, we have developed a comprehensive tool for numerical simulation of complex nearshore hydrodynamics. |
| Keyword | turbulence; coherent structures; eddies; tsunami whirlpool; long waves; shallow water; transport; Boussinesq equations; nearshore; wave-current interactions; two-way coupling; stratified flows; internal waves; tsunami; |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m |
| Contributing entity | University of Southern California |
| Rights | Son, Sangyoung |
| Physical access | The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given. |
| Repository name | University of Southern California Digital Library |
| Repository address | USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA |
| Repository email | cisadmin@lib.usc.edu |
| Archival file | uscthesesreloadpub_Volume4/etd-SonSangyou-1005.pdf |
Description
| Title | Page 1 |
| Contributing entity | University of Southern California |
| Repository email | cisadmin@lib.usc.edu |
| Full text | WAVE INDUCED HYDRODYNAMIC COMPLEXITY AND TRANSPORT IN THE NEARSHORE by Sangyoung Son A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (CIVIL ENGINEERING) August 2012 Copyright 2012 Sangyoung Son |
