| Author | Tran Chi Trung |
| Call Number | AIT Thesis no.WM-97-06 |
| Subject(s) | Drainage--Vietnam--Bac Hung Hai Project
|
| 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-97-06 |
| Abstract | An available model is improved to simulate the unsteady flow in looped channel
system with trapezoidal cross sections. In addition, in the improved model, the rainfall pattern
is used as the upstream boundary condition for the channels which are modeled from the
paddy fields drained by gravity. The finite difference approximation of the implicit
Preissmann Scheme is used for solving numerical solutions of governing equations . In the
computer program, the simultaneous linear equation system is solved by the Double Sweep
Method. The model is calibrated by using the measured data in the year 1994 and verified by
using the measured data in the year 1985. Good agreement between the computed and
observed water elevation are obtained.
After the calibration and verification, the model is applied to determine the
effectiveness of the alternative measures for improving drainage capacity of the system. Some
of the proposed measures produced only little or no beneficial effect while others proved to be
very effective in decreasing water surface along the main channels as well as reducing the
flooded paddy areas. Among the proposed measures, combining channel dredging and
constructing inside pumps to drain from paddy fields to the drainage channels is the most
suitable measure in reducing flooded area. The second priority was the measure of combining
channel dredging and change in land use of the system. |
| Year | 1998 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. WM-97-06 |
| 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) | Kubo, Naritaka; |
| Examination Committee(s) | Gupta, Ashim Das;Loof, Rainer; |
| Scholarship Donor(s) | SIDA ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1998 |