| Author | Hazrat, Ali Md. |
| Call Number | AIT Thesis no.WM-96-07 |
| Subject(s) | Sediment transport--Bangladesh--Jamuna River
|
| 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-96-07 |
| Abstract | Major changes take place in the planform and bed topography of the Jamuna
River (Bangladesh), pa11icularly during the flood season and the effects of these changes
are carried out in this study in the form of stability analysis by pe11urbation method.
A two-dimensional model of flow and sediment transport in an originally straight
alluvial river with erodible bed and non-erodible banks is developed and applied in which
the effect of transverse slope resulting from the effect of secondary currents, the effect of
spiral motion due to curvature of the channel on the bed shear stress and the effect of the
frictional resistance from bedforms is incorporated in the model. The transportation of the
sediment is composed of bed load and suspended load (wash load excluded). The main
purpose of the model is to describe the 2-D flow leading to instability of the dune covered
alluvial river. A stability theory has been developed which determines the most unstable
mode, the celerity of the sand dune and the wavenumber corresponds to maximum
instability. The analysis is also able to predict whether a river would braid or meander.
The model has been applied based on the data collected on Jamuna River. Several
implications of the proposed model are also discussed. |
| Year | 1996 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. WM-96-07 |
| 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) | Kyotoh, Harumichi; |
| Examination Committee(s) | Tawatchai Tingsanchali;Kubo, Naritaka; |
| Scholarship Donor(s) | DAAD;Asian Institute of Technology; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1996 |