FLOW ANALYSIS AROUND SERIES GROYNES OF DIFFERENT LAYOUT USING ANSYS FLUENT

Abstract

Groynes are hydraulic structure constructed across the river either to control the flow of the river or to deviate the flow away from the protected bank. These can be of various types based on the material used for the construction or depending upon the shape of the groynes constructed. Generally, we do not try to construct the single groyne in the flow field as it has more ill effects than its advantage. So study of flow around the series groyne become important. In series groyne analysis, study of flow around all groyne will a difficult task specially if done by lab experimental models. In this study flow pattern around series groynes of different layout has been analysed using ANSYS Fluent. Four model of groyne are formed based on Uijttewaal experimental model. Groyne models are different from each other’s on the basis of their intrusion length, tip slope or permeability. Plots of velocity, shear, TKE is plotted on different section of the flow channel. Tip velocity near the fourth groyne is compared with experimental results. Plot showing horizontal velocity profile and vertical velocity profile are useful for getting the idea that which groyne might causes maximum shear and will have vortex formation near the tip. Plot of streamlines, velocity vector and contours of shear and TKE is useful for visualizing the flow. Amplification factor of different parameters are studied for knowing the intensity of disturbance caused by groyne shape. For best layout of the groyne location and magnitude of parameters are compared.