| Author | Hsieh, Kuo-miao |
| Call Number | AIT Thesis no. WA-89-05 |
| Subject(s) | Spillways
|
| Note | A thesis submitted in partial fulfillment of the requirements
for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Cavitation erosion occurring on the surface of the hydraulic
structure is ca used by the surface irregularities, subjected to
high velocity and high head flow down the channel, the cavitation
damage is prone to happen. To prevent this damage, the
installation of aeration device on the spillway channel has been
proven to be successful and economical.
In the present study, experiments have been carried out on
two models of steep slope rectangular spillway channel with
vertically constant radius curved profile in downstream. The
investigation of the effective length has been performed on these
two models with some ae ration devices having various shape
parameters of square groove with deflector type and different
flow conditions.
The results obtained from this study can be used as a
reference to deter mine the effective length between aeration
grooves on the curvature spillway channel with the groove
installed at the tangential point. Due to the radius of curvature
spillway channel is constant the results obtained from this study
can be utilized conditionally. An attempt is also made to
investigate the sensitivity of the ratio of the effective length
to the water depth resulted from shifting the location of
aeration groove 50 cm up stream of the tangential point. It is
found that there is no relevant relationship between the ratio of
the effective length to the water depth and relating parameters. |
| Year | 1989 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Resources Research Engineering (WA) |
| Chairperson(s) | Preecha Kamronrithisorn; |
| Examination Committee(s) | Prida Thimakorn;Suphat Vongvisessomjai; |
| Scholarship Donor(s) | The Government of the Republic of China; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1989 |