Physical modeling for optimizing intake with asymmetric approach channel for hydropower project | |
| Author | Sujitra Tulyanon |
| Call Number | AIT Thesis no.WM-21-05 |
| Subject(s) | Hydraulic structures--Design and construction Asymptotic distribution (Probability theory) Water-power |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | Nowadays, some hydropower projects are developed in small rivers while their hydraulic structure boundaries are larger than the width of the river. This is a challenge for the designer to provide an effective design for the intake approach channel. Deedoke Hydro Power Plant, Myitnge river, Myanmar is used as a case study to improve an asymmetric approach channel design for the power intakes. The model of the case study is studied intensively in both flow pattern and hydraulic phenomena aspect, especially the vortex and occurrence of the dead zone. Using six different preliminary configurations analyses. The angle of approach channel (θA) and the width of the entrance at the approach channel (WE) are the impact variables that have the most effects on the flow characteristics. After performing eight additional tests in addition to the preliminary tests, this study provides a significant academic contribution on top of the commercial case (preliminary tests) by first, proposes a design guideline for the asymmetric approach channel enhancement i.e., θA should stay in the range of 40 – 50 degree and WE should be equal to or not greater than 1.5 times the width of the natural river. Moreover, the installation of the anti-vortex beams was found to reduce the frequency of vortex occurrence and the guide vanes also assist in improving the flow direction in front of intakes to converge to the vertical streamline. The guideline documented in the present study can be used to assist the dam engineer to achieve a proper design of the approach channel. Second, the cost-effectiveness analysis of the different modifications from both preliminary and propose configurations is also carried out in this study. The hydraulic performance is included in the effectiveness scoring. This approach is also useful to define the optimum solution in terms of the economic aspect |
| Year | 2021 |
| 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) | Sutat Weesakul |
| Examination Committee(s) | Shanmugam, Mohana Sundaram;Roa, Arturo Gementiza;Shrestha, Sangam |
| Scholarship Donor(s) | Ministry of Agriculture and Cooperatives (MOAC), Thailand;Asian Institute of Technology Fellowship |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2021 |