| Author | Nguyen Duy Khang |
| Call Number | AIT Thesis no. WM-00-10 |
| Subject(s) | Hydraulics--Mathematical models
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master
of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The information on the two-dimensional flow field is essential to understand various
phenomena in rivers. Numerical simulations can give us the information that is difficult to be
obtained in field observations. In this study, a general numerical model is developed to solve
two dimensional unsteady depth-averaged flow equations. In order to handle the complex
geometry problem, the model is developed basing on the non-01thogonal boundary fitted
coordinate system coupling with the finite volume method. To enhance applicability, the
equations are solved in transformed computational coordinate. For the space discretization, the
QUICK approach is used while the time integration is accomplished by using the multi-step
predictor-corrector method: the second-order Adams-Bashfo1th method as the predictor and the
third-order Adams-Moulton method as the corrector. The depth-averaged eddy-viscosity
parabolic turbulent model is used to approximate the turbulent Reynolds stresses. The model is
verified by physical model data of several hydraulics problems with satisfactory agreement. The
model is able to handle both subcritical and supercritical flows. The good results obtained from
the model application to the Red River, Vietnam shows that the model has the capabilities to
simulate flow fields in natural streams with highly irregular topography and complex geometry. |
| Year | 2001 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Izumi, Norihiro |
| Examination Committee(s) | Gupta, Ashim Das ;Suphat Vongvisessomjai ; Clemente, Robe1io
|
| Scholarship Donor(s) | Government of Denmark (Danida) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2001 |