Hydraulic Jumps And Supercritical & Non-Uniform Open Channel Flow

Introduction
Many examples of open channel flow can be approximated as uniform flow allowing the Manning equation to be used. Non-uniform flow calculations are needed, however, in some open channel flow situations, where the flow is clearly non-uniform. The concepts of supercritical, subcritical and critical flow, and calculations related to those three regimes of flow, are needed for non-uniform open channel flow analysis and calculations. Hence, in this course, the parameter called specific energy will first be used to introduce the concepts of critical, subcritical, and supercritical flow. Various calculations related to critical, subcritical and supercritical flow conditions will be presented, including hydraulic jump calculations. The thirteen possible types of gradually varied nonuniform flow surface profiles will then be presented and discussed. Also, the procedure and equations for step-wise calculation of gradually varied nonuniform surface profiles will be presented and illustrated with examples.