Page 1 |
Save page Remove page | Previous | 1 of 240 | Next |
|
small (250x250 max)
medium (500x500 max)
large ( > 500x500)
Full Resolution
All (PDF)
|
This page
All
Subset |
OSCILLATIONS OF SEMI-ENCLOSED WATER BODY INDUCED BY
HURRICANES
by
Yuan-Hung Paul Tan
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)
December 2010
Copyright 2010 Yuan-Hung Paul Tan
Object Description
| Title | Oscillations of semi-enclosed water body induced by hurricanes |
| Author | Tan, Yuan-Hung Paul |
| Author email | yuanhtan@usc.edu; yctan@earthlink.net |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Civil Engineering |
| School | Viterbi School of Engineering |
| Date submitted | 2010 |
| Restricted until | Unrestricted |
| Date published | 2010-10-19 |
| Advisor (committee chair) | Lee, Jiin-Jen |
| Advisor (committee member) |
Lee, Vincent W. Wellford, L. Carter Nasseri, Iraj Moore, James E. II |
| Abstract | A numerical study is conducted to simulate the oscillations (storm surges) of semi-enclosed water body induced by hurricanes. For application using the numerical model developed in the present study, Lake Pontchartrain (located in southeastern Louisiana) is chosen as the semi-enclosed water body and Hurricane Katrina (the costliest hurricane in the history of the United States) is chosen as the hurricane. There are three (3) reasons to choose Lake Pontcharrain and Hurricane Katrina: 1. Storm surge built up in Lake Pontchartrain during Hurricane Katrina, 2. Wind drove water into Lake Pontchartrain as Hurricane Katrina approached from the Gulf of Mexico, and 3. The extensive field data, gathered by the Interagency Performance Evaluation Task Force (IPET), is available to provide the needed comparison of numerical result and prototype data on the oscillations at Lake Pontchartrain induced by Hurricane Katrina.; The depth-average, non-linear shallow-water equations (NLSW) are use as the governing equations. The finite-volume method (FVM) is employed to solve the governing shallow-water equations. In order to validate the present model, the hydrographs due to Hurricane Katrina obtained from the present model are compared with the field data reported by IPET at eight (8) sites along the shores and the center of Lake Pontchartrain. These eight (8) sites are: the 17th street Canal, the Orleans Avenue Canal, the London Avenue Canal, the Inner Harbor Navigation Canal (IHNC)-Lakefront Airport, Midlake, Bayou Labranch, Pass Manchac, and Little Irish Bayou.; The time at which the maximum water surface elevation (WSE) occurs as predicted by the present model is almost identical to the time at which the maximum water level is observed at the 17th Street Canal, the Orleans Avenue Canal, the London Avenue Canal, and the IHNC-Lakefront Airport sites. Furthermore, the present model accurately predicts the general trend of the water level when the hydrographs due to Hurricane Katrina are compared with the observed hydrographs at the 17th Street Canal, the Orleans Avenue Canal, the London Avenue Canal, the IHNC-Lakefront Airport, and the Midlake sites. However, the present model only reasonably predicts the general trend of the water level when the hydrographs due to Hurricane Katrina are compared with the observed hydrographs at the Bayou La Branche (named Bayou Labranch by IPET), the Pass Manchac, and the Little Irish Bayou sites.; The present model is further applied to investigate the oscillations at Lake Pontchartrain induced by four (4) synthetic hurricanes within the time-span of 00:00 UTC August 29, 2005 to 00:00 UTC August 30, 2005: Case 1. Hurricane Katrina tracks on its original route, Case 2. Hurricane Katrina tracks 36 km west of its original route, Case 3. Hurricane Katrina tracks 72 km west of its original route, and Case 4. Hurricane Katrina tracks on its original route with forward speeds reduced by 16% ~ 45% (or altered from 15 km/h ~ 36 km/h to 15 km/h ~ 22 km/h). These are done to assess the impact of hurricanes under different risk conditions. It is found that much more severe catastrophes in metro New Orleans and neighboring parishes can be expected under the scenarios of: Case 2. Hurricane Katrina passes through the east part of New Orleans, Louisiana and both the east and central parts of Lake Pontchartrain and Case 4. Hurricane Katrina passes through the regions nearby the east shore of Lake Pontchartrain with reduced forward speeds. |
| Keyword | oscillations; depth-averaged; non-linear shallow water eqautions (NLSW); finite-volume method (FVM); Hurricane Katrina; Lake Pontchartrain; risk-based design and analysis |
| Geographic subject | lakes: Lake Pontchartrain |
| Geographic subject (state) | Louisiana |
| 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-m3506 |
| Rights | Tan, Yuan-Hung Paul |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Tan-4151 |
| Archival file | uscthesesreloadpub_Volume17/etd-Tan-4151.pdf |
Description
| Title | Page 1 |
| Full text | OSCILLATIONS OF SEMI-ENCLOSED WATER BODY INDUCED BY HURRICANES by Yuan-Hung Paul Tan 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) December 2010 Copyright 2010 Yuan-Hung Paul Tan |
Comments
Post a Comment for Page 1
