Book contents
- River Dynamics
- Reviews
- River Dynamics
- Copyright page
- Contents
- Preface
- Chapter 1 Introduction
- Chapter 2 The Dynamics of Drainage Basins and Stream Networks
- Chapter 3 Sediment Dynamics at Global and Drainage-Basin Scales
- Chapter 4 Flow Dynamics in Rivers
- Chapter 5 Sediment Transport Dynamics in Rivers
- Chapter 6 Magnitude-Frequency Concepts and the Dynamics of Channel-Forming Events
- Chapter 7 The Shaping of Channel Geometry
- Chapter 8 Channel Planform – Controls on Development and Change
- Chapter 9 The Dynamics of Meandering Rivers
- Chapter 10 The Dynamics of Braided Rivers
- Chapter 11 The Dynamics of Anabranching Rivers
- Chapter 12 The Dynamics of River Confluences
- Chapter 13 The Vertical Dimension of Rivers: Longitudinal Profiles, Profile Adjustments, and Step-Pool Morphology
- Chapter 14 The Dynamics of Floodplains
- Chapter 15 Human Impacts on River Dynamics
- Chapter 16 River Dynamics and Management
- Book part
- Symbols
- References
- Index
- Plate Section (PDF Only)
Chapter 4 - Flow Dynamics in Rivers
Published online by Cambridge University Press: 30 April 2020
- River Dynamics
- Reviews
- River Dynamics
- Copyright page
- Contents
- Preface
- Chapter 1 Introduction
- Chapter 2 The Dynamics of Drainage Basins and Stream Networks
- Chapter 3 Sediment Dynamics at Global and Drainage-Basin Scales
- Chapter 4 Flow Dynamics in Rivers
- Chapter 5 Sediment Transport Dynamics in Rivers
- Chapter 6 Magnitude-Frequency Concepts and the Dynamics of Channel-Forming Events
- Chapter 7 The Shaping of Channel Geometry
- Chapter 8 Channel Planform – Controls on Development and Change
- Chapter 9 The Dynamics of Meandering Rivers
- Chapter 10 The Dynamics of Braided Rivers
- Chapter 11 The Dynamics of Anabranching Rivers
- Chapter 12 The Dynamics of River Confluences
- Chapter 13 The Vertical Dimension of Rivers: Longitudinal Profiles, Profile Adjustments, and Step-Pool Morphology
- Chapter 14 The Dynamics of Floodplains
- Chapter 15 Human Impacts on River Dynamics
- Chapter 16 River Dynamics and Management
- Book part
- Symbols
- References
- Index
- Plate Section (PDF Only)
Summary
This chapter examines the dynamics of flow in rivers and streams. Fundamental hydraulic concepts are introduced, including classification of flow in open channels as steady versus unsteady and uniform versus nonuniform; characteristics of one-, two-, and three-dimensional open-channel flows; mathematical treatment of open channel flow as fully three-dimensional (Navier–Stokes equation); simplifications of energy and force relations based on one-dimensional, steady, uniform treatments of open-channel flow; ratios of forces (Reynolds and Froude numbers); and resistance relations for reach-averaged one-dimensional flow. Boundary-layer theory is reviewed to relate the forces acting on the channel boundary to the velocity profile and to turbulent stresses, to derive the law of the wall for the turbulent part of the boundary layer, to show how the law of the wall can be used to determine boundary shear stress and roughness height, and to examine how boundary roughness, including the development of bedforms, affects boundary-layer structure and flow resistance.
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- River DynamicsGeomorphology to Support Management, pp. 72 - 96Publisher: Cambridge University PressPrint publication year: 2020