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Hydraulic Design of Labyrinth Weirs

Abstract

  • This comprehensive handbook on the hydraulic design of labyrinth spillways—from theory to current practice—presents a state-of-the-art method for the effective design of labyrinth weirs. The book provides a fundamental understanding of the theory of labyrinth weirs and continues with detailed sections on significant factors that affect the discharge characteristics of labyrinth weirs, such as crest shape, weir height, and sidewall angle. The most common design curves are discussed, and from these a recommendation is developed for only one design curve to be used in future designs. But because site conditions often vary so much from ideal conditions described in this book, a section on site-specific modeling criteria is included for making accurate predictions of prototype performance. In its review of past studies, the book closely examines many long-held concepts, especially concerning the idea of interference, nappe oscillation, and the definition of which head to use in design computations, and revises them in an effort to advance current thinking based on the latest research.

    With its review of theoretical concepts and its straightforward presentation of the practical aspects of design, both practicing engineers and researchers will find this book to be a "must-have" reference for the hydraulic design of labyrinth weirs. To help guide the designer, an appendix provides a representative sample of the prototype installations and their dimensions that have been constructed worldwide.

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Front Matter
i–ix
    Chapter 1:
    Introduction
    1–7
      Chapter 2:
      Analytic Development
      9–17
        Chapter 3:
        Nappe Interference
        19–29
          Chapter 4:
          Crest Shapes
          31–39
            Chapter 5:
            Design Curves
            41–59
              Chapter 6:
              Downstream Chute
              61–68
                Chapter 7:
                Nappe Oscillation
                69–76
                  Chapter 8:
                  Design
                  77–93
                    Chapter 9:
                    Sedimentation and Ice
                    95–101
                      Chapter 10:
                      Aeration
                      103–108
                        Chapter 11:
                        Special Cases
                        109–117
                          Chapter 12:
                          Modeling Procedures
                          119–129
                            FREE
                            Appendix A:
                            Prototype Labyrinth Spillways
                            131–144
                              FREE
                              Appendix B:
                              Comparison of Labyrinth Spillways with Curves of Tullis (1994)
                              145–147
                                FREE
                                Index
                                161–162
                                  FREE
                                  Back Matter
                                  149–160