Flow field investigation in a rectangular shallow reservoir using UVP, LSPIV and numerical modelling

Kantoush, Sameh A.; Cesare, Giovanni De; Boillat, Jean-Louis; Schleiss, Anton

doi:10.1016/j.flowmeasinst.2007.09.005

Cited by 56 publications

(37 citation statements)

References 7 publications

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“…This method was applied successfully by De Cesare and Schleiss (1999), Best et al (2001), Baas et al (2005) and Hosseini et al (2006) in monitoring of laboratory turbidity currents, and in a laboratory reservoir sedimentation study by Kantoush et al (2008).…”

Section: Flow Velocity Measurementsmentioning

confidence: 99%

Effect of inclined jet screen on turbidity current

Oehy

Cesare

Schleiss

2010

Journal of Hydraulic Research

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The sustainable use of reservoirs for irrigation, flood protection, water supply and hydropower may be endangered due to unavoidable reservoir sedimentation. Turbidity currents are the main process for the transport and deposit of sediments in reservoirs, especially in the deepest part near the dam where vital structures such as power intakes and bottom outlets are located. Besides other measures such as solid or permeable obstacles, turbidity currents can be influenced by means of an inclined water jet screen. Physical experiments of a turbidity current flowing through a water jet screen were carried out. Velocity profiles, front velocities, and deposit evolutions were determined. The results indicate that in certain configurations, turbidity currents can be partially stopped by the jet screen. Furthermore, the deposits downstream of the screen may be reduced up to a factor of two as compared with deposits of a free-flowing turbidity current.

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Section: Flow Velocity Measurementsmentioning

confidence: 99%

Effect of inclined jet screen on turbidity current

Oehy

Cesare

Schleiss

2010

Journal of Hydraulic Research

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“…Ultra Sonic Velocity Profiler device (UVP) was employed for providing the 3D flow velocity measurements as well. Also, within the frame work of experimental study, sedimentation and sediment flushing from the shallow reservoirs were investigated (Kantoush et al 2008b). Non-uniform crushed walnut shells were used.…”

Section: Experimental Setup and Conditionsmentioning

confidence: 99%

“…A set of tree UVP probes which were inclined at 20° to the vertical axis, allowed measuring the 3D flow field. The first valid UVP measurements were located at 12.5 cm away from the side walls and 2.5 cm from the free water surface (Kantoush, 2008b). Figure 4a and 4b demonstrates the longitudinal velocity distribution over the flow depth, at upstream, middle, and downstream area of case T9.…”

Section: Flow Field Modeling On Fixed Bedsmentioning

confidence: 99%

Three-dimensional numerical modeling of flow field in rectangular shallow reservoirs

Esmaeili¹,

Sumi²,

Schleiss³

et al. 2014

Reservoir Sedimentation

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Flow field in shallow waters, which is characterized by its complex mixing process and inherent dynamic nature, is interesting mainly due to its practical importance (e. g. in free flushing operation and sedimentation in large reservoirs). 3D numerical models make it possible to track two-dimensional large turbulence coherent structures, which are the dominant phenomenon in shallow reservoirs flow field. In the present study a fully three-dimensional numerical model SSIIM that employs the Finite Volume Approach (FVM) was utilized to reproduce the 3D flow field. Various shallow reservoir geometries with fixed and deformed equilibrium bed were considered. The measurements by Large-Scale Particle Image Velocimetry techniques (LSPIV) and Ultrasonic Doppler Velocity Profiler (UVP) over the flow depth were used for model validation. Outcomes revealed reasonable agreement between the simulated and measured flow velocity field even when an asymmetric flow pattern exists in the reservoir.

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“…Velocity distributions determined by UVP and LSPIV are approximately the same in the approach channel. More details on comparing numerical simulations and measured data can be found in Kantoush et al (2008).…”

Section: Accuracy Of the Measuring Systemmentioning

confidence: 99%

LSPIV implementation for environmental flow in various laboratory and field cases

Kantoush

Schleiss

Takemon

et al. 2011

Journal of Hydro-environment Research

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Large-Scale Particle Image Velocimetry (LSPIV) is an extension of a quantitative imaging technique to measure water surface velocities using simple and inexpensive equipment. This paper describes the implementation of imaged-based LSPIV in eight different environmental flow and hydraulic engineering applications for the investigation of complex configurations with and without sediment transport (bed and suspended loads). These applications include the investigation of sedimentation in shallow reservoirs, run-of-river hydropower plants, side weirs used to control bank overflow, flow fields in different spillway configurations with and without Piano Key Weir (PKW), oil spills with flexible and rigid barriers, groin fields, river confluence, and sediment flushing in reservoirs. The paper summarises some special problems encountered in such study cases. The selection and adjustments of the parameters to solve them properly were examined. The potential of LSPIV to measure surface flow velocities in the context of river and dam engineering projects is shown. Despite significant variations of natural and artificial illuminations and seeding tracers in the laboratory, field, wind, and water surface elevation, LSPIV was applied successfully to obtain velocity measurements. LSPIV has proven to be a reliable, flexible, and inexpensive flow diagnostic tool that can be employed successfully in many engineering applications. Ó

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Flow field investigation in a rectangular shallow reservoir using UVP, LSPIV and numerical modelling

Cited by 56 publications

References 7 publications

Effect of inclined jet screen on turbidity current

Effect of inclined jet screen on turbidity current

Three-dimensional numerical modeling of flow field in rectangular shallow reservoirs

LSPIV implementation for environmental flow in various laboratory and field cases

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