FINITE ELEMENT SOLUTION OF TWO DIMENSIONAL TURBULENT FLOW IN A BEND

Abstract

Complex Fluid Flow problem of natural/artificial streams having curved path are of immense practical importance. Such problems have been drawing attention from researchers world over. One of the practical field situation encountered in this !•.6 category of problem Al the effect of curved path in velocity variation. Such a variation plays an important role in development of secondary flows In a curved channel carrying sediment through fluid flow has shown a tendency of erosion of the sediment on the concave side of the channel. The primary source for such erosion is due to the secondary flow. This secondary flow is governed by the velocity variation in the direction of flow from concave edge towards convex edge of the channel. This variation can be controlled if obstructions in the direction of flow are suitably placed on the side walls of the channel. Researchers have carried out different experimental studies to understand the physical phenomenon of flow on a curved path. The increasing trend of mathematical modelling and numerical. Analysis has made it possible to develop suitable mathematical models and the high-speed computers have made it feasible to write computer codes to solve such complex problems. In the present dissertation it is proposed to carry out a study of 2-D turbulent flow in an open channel having a bend of 90° using mathematical model and Finite Element Solutions.