Effects of Inclination Angle on Archimedes Screw Generator Power Production with Constant Head

Simmons, Scott C.; Dellinger, Guilhem; Lyons, Murray; Terfous, Abdelali; Ghenaim, Abdellah; Lubitz, William David

doi:10.1061/(asce)hy.1943-7900.0001854

Cited by 13 publications

(12 citation statements)

References 19 publications

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“…Screws with low inclination angles performed best in a study that varied length and inclination to maintain a constant head: three inclination angles were tested (15.6 , 24.4 , and 33.8 ) and the screw with β = 15.6 had the highest efficiency [113]. The authors plan to extend their dataset with CFD simulations to test these relationships further, since existing literature on inclination angles suggests the opposite [103,114].…”

Section: Geometry and Operating Parametersmentioning

confidence: 99%

“…CFD has been used to investigate variations in ASG performance due to changes in pitch [150], number of blades [130,150], flow rate [120,151], outlet variations [152], pressure and velocity characteristics [133,150], and inclination angle [120,130,148,151,153]. Numerical simulations in the literature include simulations of single buckets and multiple coupled buckets [145,146], as well as full-scale dynamically meshed domains [133,148,151].…”

Section: Cfd Modelsmentioning

confidence: 99%

“…Improved outlet modeling will aid in optimizing screw design, including further investigation of end treatment effects. Some preliminary investigation was conducted regarding screw length and inclination angle optimization [161], but it was carried out at the laboratory scale. Further investigation would be beneficial, particularly with respect to manufacturing costs, though it may prove difficult due to their proprietary nature.…”

Section: Research Needsmentioning

confidence: 99%

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Archimedes screw generators for sustainable micro‐hydropower production

Simmons

Lubitz

2021

Intl J of Energy Research

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Archimedes screws have been used as pumps since antiquity and have more recently been implemented in micro-hydropower plants as an ecologically advantageous technology. They are regarded as a hydropower technology with lower environmental impact since they allow safe passage of aquatic flora and fauna through slow turning, widely spaced blades during operation. Archimedes screw generators (ASGs) operate at river-to-wire efficiencies at approximately 75% with relatively low installation and maintenance costs when compared to other hydropower technologies of the same scale. ASGs are relatively simple and cost-efficient to manufacture-simple enough to create in the seventh century BCE. Modern manufacturing techniques for sheet metal and fabrication have refined ASG production. The literature contains various parametric models for predicting screw power output, and more recent numerical simulations have provided insight into the fluid mechanics of screw generators. The knowledge gained from these studies has allowed researchers to suggest more optimal designs for Archimedes screws. However, much can be done to further improve the accuracy of power prediction models. This paper discusses the current state of the literature for ASGs, and highlights areas for future research to improve power prediction and optimization capabilities for researchers and industrial designers. Highlights• Archimedes screws are an ancient pumping technology that have more recently found use as a hydropower-producing technology.• Archimedes screw generators (ASGs) are a small-scale hydropower technology that may be installed as a run-of-river installation.• ASGs are an eco-friendly technology that allow for the safe passage of sediments, small debris, fish, and other aquatic wildlife through their flights during operation.• There are few experiments and computational fluid dynamic simulations that have sought to extend the literature's data on ASG operation.• Current performance models for ASGs lack robust validation to be properly implemented in power plant design.

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Section: Geometry and Operating Parametersmentioning

confidence: 99%

Section: Cfd Modelsmentioning

confidence: 99%

Section: Research Needsmentioning

confidence: 99%

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Archimedes screw generators for sustainable micro‐hydropower production

Simmons

Lubitz

2021

Intl J of Energy Research

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“…A dataset with more than 1500 unique data points has been gathered with this experimental setup. Details are documented in the literature; this study used data from this set [32]- [36].…”

Section: A Laboratory Experimentsmentioning

confidence: 99%

“…New modelling, formulation, and post processing techniques were adapted through collaboration between the University of Guelph and the ICube Laboratory using OpenFOAM 4.0. Details of the basic formulation of this adapted model are available in the literature [43]. The simulation domain is shown in Fig.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Dynamic Overflow Leakage In Archimedes Screw Generators

Simmons¹,

Dellinger²,

Aliabadi³

et al. 2021

Progress in Canadian Mechanical Engineering. Volume 4

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The dynamic overflow leakage phenomenon has been introduced in Archimedes screw generator research, but it has not been discussed in the literature in much detail. The authors sought to examine this phenomenon in greater detail by computational fluid dynamic (CFD) studies supported with experimental observations. The CFD results indicated that surface roughness had a significant impact on frictional power losses as well as overflow leakage in Archimedes screws. The results gathered and documented in this study will aide in further performance predicting model development to optimize the design and power production of Archimedes screw generator powerplants.

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Engineering

Aliabadi

2022

Turbulence

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Effects of Inclination Angle on Archimedes Screw Generator Power Production with Constant Head

Cited by 13 publications

References 19 publications

Archimedes screw generators for sustainable micro‐hydropower production

Archimedes screw generators for sustainable micro‐hydropower production

Dynamic Overflow Leakage In Archimedes Screw Generators

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