| Author | Hoang Anh Dung |
| Call Number | AIT Thesis no.WM-96-08 |
| Subject(s) | Sediment transport--Vietnam--Soai Rap River
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. WM-96-08 |
| Abstract | The Hydrodynamic and Mud Transport Models based on the finite-difference
formulations are modified and applied to study the variations of flow patterns and sediment
distribution patterns at the Soai Rap river mouth. The hydrodynamic model is based on the
conservation of flow-mass and momentum equations, ve1tically averaged over the whole
water depth. The depth averaged two dimensional model is used to study the tidal circulation
in a discrete representation of a continuum problem with a variety of computational
procedures and boundary conditions which are currently available. By using the Alternating
Direction Implicit (ADI) finite difference scheme, a combination of implicit and explicit
schemes, the numerical model is developed to achieved the proposed results. The calibration
of results to prove the reliability of the model is performed and it shows satisfactory
comparison of observed and computed current velocity and direction. The verification is also
performed using the tidal current measured at an entirely different period of time. The mud
transport model is based on the solution of the three-dimensional diffusion-convective
equation. Interaction of tidal current and wave action is taken into account.
The shallow water wave model developed by the US Coastal Engineering Research
Center is used to compute the wave field at the area of interest.
The grid system of 6x = 6y = 800 m, which covers an computation domain of 336
lan2 is used for all three models above. A time increment of 60 seconds is used for both
hydrodynamic and mud transport models.
Measured data of water level and tidal current at Cangio2 and Dongtranh are used for
calibration of the hydrodynamic model. Measured data at study area is used for comparison
of sediment concentration between the observation and the computed results of the mud
transport model. From model calibration, it is found that the computed results of tidal current,
water level and sediment concentration are good agreement with the measured data. |
| Year | 1996 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. WM-96-08 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Suphat Vongvisessomjai ; |
| Examination Committee(s) | Sutat Weesakul;Kyotoh, Harumichi; |
| Scholarship Donor(s) | The Royal Danish Government (DANIDA); |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1996 |