Super Elevation and Radius of Curvature of Bent Channels

Abstract

Increasing erosion and altering the morphology of the channel. If meanders are not properly stabilized, they may continue to develop and shift. This paper explains the physics of flows around bends. Scouring on the concave banks will result from the secondary flood pattern created by the ensuing curve flow. This movement will contribute to the meanders' increased curvature when combined with silt depositions on the convex banks. Centrifugal forces, secondary currents, and the physical properties of the channel interact intricately to affect the flow of water around bends in open channels. These elements are crucial to take into account in both natural and artificial streams since they affect the flow velocity, sediment transport, erosion, and deposition patterns leading to the accretion of sediments called point bars. Channels designs are usually advised to be subcritical and uniform in flow with Froude number less than 0.6 to avoid standing waves and are guided against critical depth. The freeboard or height of the concave edge or outer bank should be raised by 70-percent of the super elevation. The channel should be designed for average flow velocity of 0.7m/s suppose the discharge carries sediments to circumvent sedimentation in the system. Riprap and vegetation are examples of channel engineering projects that can be utilized to stabilize the banks and stop excessive erosion.