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Title: Turbulence characteristics in a rough open channel under unsteady flow conditions
Authors: Khuntia, Jnana Ranjan
Devi, Kamalini
Das, Bhabani Shankar
Khatua, Kishanjit Kumar
Keywords: Open channel flow
Unsteady flow
Turbulence characteristics
Reynolds stress
Issue Date: Dec-2018
Citation: 23rd International Conference on Hydraulics, Water Resources and Coastal Engineering (HYDRO 2018), Patna,India, 19-21 December 2018.
Abstract: The present study investigates the vertical and lateral fluctuating velocity profiles under unsteady flow condition in a rectangular open channel. Experiment investigations are led with vegetated open channel flow. One hydrogram is passed through the rectangular flume with a fixed bottom with rough bed. An experiment is accordingly conducted to investigate the turbulence characteristics under unsteady flow conditions in a rough open channel for two different flow depths. For two typical flow depths, the velocities in both the rising limb and falling limb are observed. Hysteresis effect between stage-discharge (h ~ Q) rating curve between rising and falling limbs is illustrated. Turbulence characteristics, i.e. variations of Reynolds stress along the vertical and lateral direction are analyzed.
Description: Copyright of this document belongs to proceedings publisher.
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