STUDY ON FLOW RESISTANCE OVER STEEP-SLOPE GRAVEL-BED

Flow resistance equations for gravel- and boulder-bed streams

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The influence of migrating bed forms on the velocity-intermittency structure of turbulent flow over a gravel bed

[1] Modeling turbulent flows at high Reynolds number requires solving simplified variants of the Navier-Stokes equations. The methods used to close the resulting Reynolds-averaged, or eddy simulation equations usually follow classical theory and, at small enough scales, postulate universal scaling for turbulence that is independent of the velocity itself. This may not be the best way to concept...

Despiking of Turbulent Flow Data in Gravel Bed Stream

Abstract—The present experimental study insights the decontamination of instantaneous velocity fluctuations captured by Acoustic Doppler Velocimeter (ADV) in gravel-bed streams to ascertain near-bed turbulence for low Reynolds number. The interference between incidental and reflected pulses produce spikes in the ADV data especially in the near-bed flow zone and therefore filtering the data are ...

Use of slope creation for rehabilitating incised , 3 regulated , gravel bed rivers 4

6 [1] Gravel-bedded channels often become incised and degraded below dams. Gravel can 7 be added to the channel to rehabilitate hydrogeomorphic conditions, including those 8 promoting salmon spawning. When implemented without increasing bed slope, gravel 9 addition at downstream riffles back floods upstream riffles. A 2-year gravel augmentation 10 project was done to test the efficacy of a new ...

The Gravel-Bed River Reach Properties Estimation in Bank Slope Modelling