Turbulence measurements in spatially-varied flow with increasing discharge

Authors

Mehdi KhiadaniFollow
Simon Beecham
Jaya Kandasamy

Document Type

Journal Article

Keywords

Reynolds shear stress, spatially-varied flow, turbulence, turbulent kinetic energy, velocity measurementData sets, Experimental studies, Far-field, Flow condition, Lateral inflow rate, Near-field, Reynolds shear stress, Side walls, Small region, spatially-varied flow, TKE production, Transverse directions, Turbulence intensity, Turbulence level, Turbulence measurements, Turbulence parameters, Turbulent kinetic energy, Heart valve prostheses, Kinetic energy, Turbulence, Turbulence models, Velocity measurement, Discharge (fluid mechanics), data set, discharge, experimental study, flow measurement, flow modeling, flow velocity, inflow, kinetic energy, Reynolds number, shear stress, turbulence, velocity profile

Faculty

Faculty of Computing, Health and Science

School

School of Engineering

RAS ID

14906

Comments

Khiadani, M. , Beecham, S., & Kandasamy, J. (2012). Turbulence measurements in spatially-varied flow with increasing discharge. Journal of Hydraulic Research, 50(4), 418-426. Available here

Abstract

This experimental study explores the distribution of Reynolds shear stresses and turbulence intensities for a flume receiving lateral inflow via a set of vertical nozzles. The data set allows for developing turbulence models to describe a wider range of spatially-varied flow conditions. The turbulent flow structures are detailed both in the near-field close to where the flow enters the flume, and in the far-field. It was found that a lateral inflow increases the turbulence level, but it decreases in the transverse direction towards the side walls. As the lateral inflow rate increases, the turbulence parameters increase only slightly. The turbulence parameters also increase from the upstream end of the lateral inflow zone towards the downstream end. The turbulent kinetic energy (TKE) production was estimated. Small regions of negative TKE production exist, which are typically near the lateral inflow addition.

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