ANALYSIS OF BOUNDARY SHEAR STRESS IN MEANDERING CHANNEL USING ANSYS FLUENT

Abstract

Research has been carried out on meandering channels to find various aspects of boundary shear stress. But no methodical work hasabeen done to find theavariation of boundary shear stress alongaa path of meanderingachannel. In this particular research work, deviation of shear stress distribution alongathe depth and width ofathe meandering channel hasabeen systematically analysed atadifferent cross-sectionsqalong a path ofasinuous meandering channel ofq120° angle. The pathaof the meandering channel is considered from one apex of the bend to the next apex of the bendawhich changesaits direction atathe crossover. Bendaapex represents theapoint of maximumacurvature and crossover is theasection where the sinuousachannel changesaits sign. The analysis has been performed at 13adifferent different sectionsaalong the pathaof the meanderingachannel, that is from one apex of the bend to another. Research has been done to analyse the variation in boundary shearastress along theawetted perimeter on theachannel bed with different discharges to depict the flow characteristics of meandering channel. The research has been done through numerical modelling technique using ANSYS FLUENT which simulates model to solve equations.