Abstract
Submerged vanes are vortex-generating devices that are capable of controlling stream bed progression in the course of natural waterways. For an intended angle of attack, these vanes act as baffles of low height, re-directing the streamflow and thereby generating secondary currents in the mainstream. In the present study, an equilibrium scour experiment was carried out with the two identical shaped vanes aligned horizontally at a 15-degree angle to flow direction with a constant discharge and depth of water of 25 l/sec and 10.5 cm, respectively for the measurement of 3D velocity components, above, within and around the scour cavities according to the Cartesian co-ordinate system, with the help of velocity meter. The time-averaged absolute velocity profiles and the flow velocity contours (flow-wise, crosswise, vertical) along with the velocity vectors have been plotted. The consequent flow patterns are analyzed and compared at four different horizontal cross-sections (for the depths of 6, 4, 3, and 0 cm) as well as a vertical cross-section. The experimental study majorly focuses on understanding the flow kinematics around the submerged vanes useful for active sediment channelization toward the banks improving the channel navigability.
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Roy, P., Das, S., Das, R., Samanta, C. (2023). Flow Kinematics Around Two Submerged Inline Eccentric Rectangular Vanes Under Clearwater Scouring. In: Kumar, S., Ghangrekar, M.M., Kundu, A. (eds) Sustainable Environmental Engineering and Sciences. SEES 2021. Lecture Notes in Civil Engineering, vol 323. Springer, Singapore. https://doi.org/10.1007/978-981-99-0823-3_6
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