Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14076
Title: Development of a generic three-dimensional model for stratified flows
Authors: WANG DONGCHAO
Keywords: 3-D numerical model, stratified flows, sigma-coordinate, free surface, sediment dumping, non-Boussinesq.
Issue Date: 20-May-2004
Source: WANG DONGCHAO (2004-05-20). Development of a generic three-dimensional model for stratified flows. ScholarBank@NUS Repository.
Abstract: A three-dimensional numerical model has been developed to simulate stratified flows with free surfaces. The model solves the original Navier-Stokes equations with variable fluid density without Boussinesq approximation. The equations are solved in a transformed s-coordinate system with operator-splitting method (Lin & Li, 2002). The numerical model is validated against the one-dimensional convection-diffusion problem and two-dimensional density-gradient flow in a closed basin. The model is then used to study the transport phenomena of dumped sediments which are modeled in this study as a strongly stratified flow. For the two-dimensional problem, the numerical results are compared well with experimental data on sediment clouds for both fine and coarse sediments. The current model is further extended to study the dumping of sediments in a 3D environment with the presence of free surface. It is found that an annulus-like cloud will be formed for fine sediments whereas a plate-like cloud for coarse sediments.
URI: http://scholarbank.nus.edu.sg/handle/10635/14076
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
01WangDC.pdf451.19 kBAdobe PDF

OPEN

NoneView/Download
02WangDC.pdf2.26 MBAdobe PDF

OPEN

NoneView/Download
03WangDC.pdf122.37 kBAdobe PDF

OPEN

NoneView/Download

Page view(s)

222
checked on Dec 11, 2017

Download(s)

439
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.