Flow in river bends is associated with generation of secondary flows that leads to a rather complicated flow pattern around bridge piers located the bend. In this study, patterns rectangular and oblong models collar at 90o angle 180-degree sharp bend an experimental plume were investigated. The 3D velocity data collected using Vectrino velocimeter. results indicated presence pier caused more in...

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 ...

Flow mapping around bridge piers is crucial in estimating scour development potential under different flow conditions. The reliable measurement of turbulence and the estimation Reynolds stress can be achieved on scaled models controlled laboratory experiments using high-frequency Acoustic Doppler Velocimeter Profilers (ADVP) for measurement. aim this paper was to obtain operation parameters an ...

INTRODUCTION The Cross-shore Transport Experiment (CROSSTEX) is a multi-investigator, multi-university, scientific research project centered around a coordinated series of near-prototype scale experiments that were conducted at Oregon State University's O.H. Hinsdale Wave Research Laboratory (HWRL) during the summer of 2005 (Maddux et al, 2006). The experiments took place in the 104m long, 3.7m...

High-frequency velocimeters used for flow measurements during laboratory experiments allow the user to select range several operation parameters set up instrument optimal velocity measurement. The discrepancies between collected with different configurations can be significant, depending on flume bed configuration and boundary conditions. aim of this paper is quantify differences in profiles me...

Fragmentation of rivers has a negative impact on river’s ecological status which can be improved by the construction fishways next to obstacles in that prevent free migration. Flow field characteristics are key factors design process hydraulically efficient fishways—flow and turbulence patterns functional fishway allow fish enter, progress through exit with minimum time/energy expenditure. The ...