Fluvial Processes
- ISBN-10
- 9080564923
- ISBN-13
- 9789080564923
- Pages
- 197
- Language
- English
- Published
- 2001
- Publisher
- IAHR
- Authors
- Mehmet Selim Yalin, A. M. Ferreira da Silva, Ana Maria Azevedo Ferreira Da Silva
Description
Fundamentals: sediment transport; turbulent flow; two-dimensional two-phase motion; bed-load rate - Bagnold's fomula; vector forms of the bed-load rate; suspended-load rate; transport continuity equation. Bed forms and resistance to flow: origin and definition of bed forms; geometry and existence regions of bed forms caused by vertical turbulence; geometry and existence regions of bed forms caused by horizontal turbulence; additional remarks; resistance factor (c) of flow past undulated bed; transport rate (qs) of flow past undulated bed. Regime channels and their computation: introduction; regime-channel defining parameters; regime flow-width and depth; determination of the regime criterion A; computation of regime channels R; representative flow rate. Formation of regime channels - meandering and braiding: meandering and regime development; braiding and regime development; time development of a single-channel stream; large-scale bed forms and regime development. Geometry and mechanics of meandering streams: channel-fitted co-ordinates; sine-generated channels; cross-circulation; averaging procedures; convective nature of meandering flows; resistance factor of meandering streams. Meandering-related computations: vertically averaged flow in meandering channels; bed deformation by a meandering flow; migration and expansion of meander loops.
