| Author | Barbhuiya, A. A. Samsul Haque |
| Call Number | AIT Thesis no. 453 |
| Subject(s) | Weirs
Hydraulic structures
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | A theoretical study of the transient flow through a sharp edged rectangular weir was made in this research. The transient nature of the flow was caused by storing water in the approach channel by closing the
weir opening with a removable plate and then suddenly removing the plate.
The study revealed that when the plate was suddenly removed a negative wave travelled upstream. The wave was reflected at the upstream barrier
and moved back downstream. During the propagation of the negative wave upstream and then downstream of the channel, the head on the weir remained
constant. The discharge over the weir during this period followed a steady-state relationship
Q = ∝ H β
where Q was the steady discharge, H was the steady head and a and were the steady-state properties of the weir. When the reflected negative wave reached the weir it was reflected again. During this reflection the head and discharge over the weir were continually decreasing. After
the reflection the negative wave again travelled upstream resulting in a new head and discharge over the weir and the process was repeated. The study also disclosed that unsteady weir flow might be adopted
to make a rough estimate of the steady state properties of a weir ∝ and β where direct measurement of the weight or volume of flow would not be possible. |
| Year | 1972 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Ackermann, Norbert L. |
| Examination Committee(s) | Arbhabhirama Anat ;Niwat Daranandana |
| Scholarship Donor(s) | KEIDANREN Foundation |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1972 |
