Sökning: "Bijan Dargahi"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Bijan Dargahi.
1. Internal Erosion Phenomena in Embankment Dams : Throughflow and internal erosion mechanisms
Sammanfattning : In this study, two major internal erosion initiation processes, suffusion and concentrated leak mechanisms, which lead to both defect formation in a dam’s body and its foundation and high throughflow in dams subjected to internal erosion were studied. This understanding has the potential to facilitate numerical modelling and expedite dam safety assessment studies. LÄS MER
2. Modeling flow and sediment transport in water bodies and watersheds
Sammanfattning : The research focus is on the various modeling aspects of flow and sediment transport in water bodies and watersheds. The interaction of flow with a mobile bed involves a complex process in which various turbulent scales characterized by coherent structures cause a chaotic sediment motion. LÄS MER
3. Using LiDAR to model rating curves
Sammanfattning : .... LÄS MER
4. Hydrological and sediment yield modelling in Lake Tana Basin, Blue Nile Ethiopia
Sammanfattning : Land and water resources degradation are the major problems on the Ethiopian highlands. Poor land use practices and improper management systems have played a significant role in causing high soil erosion rates, sediment transport and loss of agricultural nutrients. So far limited meas-ures have been taken to combat the problems. LÄS MER
5. Modelling Hydrological and Hydrodynamic Processes in Lake Tana Basin, Ethiopia
Sammanfattning : Lake Tana Basin is of significant importance to Ethiopia concerning water resources aspects and the ecological balance of the area. The growing high demands in utilizing the high potentials of water resource of the Lake to its maximal limit, pictures a disturbing future for the Lake. LÄS MER