Hydrology & Water Resources Engineering - Vol 3 | 46. Regime Channels by Abraham | Learn Smarter
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46. Regime Channels

Regime channels are alluvial channels that reach a state of dynamic equilibrium with flowing water and sediment load. These channels adjust their geometry to minimize erosion and deposition, making them crucial in hydraulic engineering for predicting stable channel dimensions. The chapter covers various characteristics, types, theories, and applications of regime channels, underlining their importance in river and canal engineering.

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Sections

  • 46

    Regime Channels

    Regime channels are alluvial channels that reach a dynamic equilibrium with water flow and sediment, adjusting their geometry over time.

    Learning Practice

  • 46.1

    Characteristics Of Regime Channels

    Regime channels are alluvial channels that achieve dynamic equilibrium with water flow and sediment load, characterized by adjustable boundaries and stable cross-sections.

    Learning Practice

  • 46.2

    Types Of Regime

    This section discusses the two primary types of regime channels: Initial Regime and Final Regime.

    Learning Practice

  • 46.2.1

    Initial Regime (Or Semi-Regime)

    The Initial Regime occurs when the bed of a regime channel is in equilibrium, yet the banks remain unadjusted, allowing the channel's width to change over time based on flow.

    Learning Practice

  • 46.2.2

    Final Regime (Or Full Regime)

    The Final Regime describes a condition where both the channel bed and banks are stable, maintaining consistent geometric properties under specific discharge and sediment load conditions.

    Learning Practice

  • 46.3

    Regime Theory

    Regime theory explains how regime channels achieve dynamic equilibrium with flowing water and sediment load, providing a foundation for hydraulic engineering.

    Learning Practice

  • 46.3.1

    Kennedy’s Theory (1895)

    Kennedy's Theory outlines the fundamental relationships governing regime channels, focusing on sediment dynamics in irrigation systems.

    Learning Practice

  • 46.3.2

    Lacey’s Theory (1930)

    Lacey’s Theory outlines key equations used to predict the characteristics of stable regime channels in hydraulic engineering.

    Learning Practice

  • 46.4

    Comparison Between Kennedy And Lacey Theories

    This section compares the theories of G.L. Kennedy and R.L. Lacey regarding regime channels, highlighting their distinctive approaches to sediment transport and channel geometry.

    Learning Practice

  • 46.5

    Blench’s Regime Theory

    Blench's Regime Theory expands upon traditional regime theory by integrating bed material size and sediment transport, emphasizing the dynamic equilibrium between discharge and sediment.

    Learning Practice

  • 46.6

    Stable Channel Design Using Regime Equations

    This section outlines the essential steps in designing stable channels using regime equations, emphasizing the importance of estimating discharge and applying Lacey’s equations.

    Learning Practice

  • 46.7

    Factors Influencing Regime Conditions

    This section outlines the various factors that influence the conditions of regime channels.

    Learning Practice

  • 46.8

    Application In River And Canal Engineering

    This section outlines the practical applications of regime channel theory in river and canal engineering.

    Learning Practice

  • 46.9

    Limitations Of Regime Theories

    Regime theories are limited due to their empirical nature and inability to account for certain environmental factors.

    Learning Practice

  • 46.10

    Recent Developments

    Recent developments in the field of regime channels have significantly advanced the understanding and application of channel dynamics.

    Learning Practice

References

Chapter_46_Regim.pdf

Class Notes

Memorization

What we have learnt

  • Regime channels exhibit equ...
  • Kennedy's and Lacey's theor...
  • Modern methods enhance regi...

Final Test

Revision Tests