Sediment characteristics around a pump intake and in a settling basin | |
| Author | Sharma, Arun Kumar |
| Call Number | AIT Thesis no. WA-89-21 |
| Subject(s) | Settling basins Sediment, Suspended |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The characteristics of suspended sediment in a river around a pump intake, located in a bend of a river , and in a settling basin are investigated through a hydraulic model study and also by a mathematical (numerical ) mode l . The pump intake of Marchwar Lift Irrigation Project , Nepal is studied for this purpose. The flow and concentration fields with t he proposed modified shape of the river around the pump intake are investigated. The concentration field around the intake, for the range of discharges , stages , and concentrations tested , is of the same order as the mean sediment concentration in the river. The velocity directions around the pump intake are found to be directed away f rom the outer bend f or both the bottom as well as surface currents thus a favorable site for locating the intake is indicated. For all discharges in the river and different rates of pumping , the concentration of sediment in the diverted (pumped ) water is almost the same as the mean sediment concentration in the river. The trap efficiency of the settling basin, however, is found to b e poor. Numerical simulation of the concentration profiles in the settling basin also results in a low efficiency of t h e basin. |
| Year | 1989 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Water Resources Research Engineering (WA) |
| Chairperson(s) | Akiyama, Juichiro ;Paudyal, Guna N. |
| Examination Committee(s) | Tawatchai Tingsanchali |
| Scholarship Donor(s) | Canadian International Development Agency (The Government of Canada ) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1989 |