DESIGN OF OPEN CHANNEL TRANSITIONS

Abstract

Transitions are important features of open channels, Their design and functioning deteimine tho stability of charnels to a great extent. Taking this fact into considnrationj an attempt has been made in this dissertation to Critically and systematically review the available literature on basic theory of flow through channel transitions, their functions and procedures of design based on ana.ytical approach as well as model tests. The design procedures of transitions with subcritical flows have been elaborately described. The design of high velocity(supercritical; transition has assumed importance recently and has also been discussed. Critical comments, whereevar possible, have been made on past and present practices. Some typical examples have also been mentioned. Recommendations have been made regarding design of inlet and expansions transitions, energy losses, and their lengths based on economics and efficiency.