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Journal articles on the topic 'Hydrokinetic energy devices'

Author: Grafiati

Published: 4 June 2025

Last updated: 15 July 2025

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1

Crawford, Mark. "Waves, Currents and Electric Potential." Mechanical Engineering 135, no. 02 (2013): 30–35. http://dx.doi.org/10.1115/1.2013-feb-2.

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This article discusses various aspects and uses of hydrokinetics in the turbine industry. Hydrokinetics is a rapidly developing field, where both big companies and start-ups can compete equally in engineering and design. Designs for hydrokinetic devices continue to evolve. The most popular hydrokinetic device is the turbine. As these turbines are installed underwater, which is much denser than air, hydrokinetic turbines provide much more power than wind turbines at relatively low water current speeds. Considerable research and development are being conducted on three aspects of hydrokinetics t

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2

Kelvin Edem Bassey. "HYDROKINETIC ENERGY DEVICES: STUDYING DEVICES THAT GENERATE POWER FROM FLOWING WATER WITHOUT DAMS." Engineering Science & Technology Journal 4, no. 2 (2023): 1–17. http://dx.doi.org/10.51594/estj.v4i2.1285.

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Hydrokinetic energy devices harness the kinetic energy from flowing water to generate electricity without the need for large dams or reservoirs. This technology represents a significant advancement in renewable energy, offering an environmentally friendly alternative to traditional hydroelectric power. Hydrokinetic devices include various designs such as tidal stream generators, free-flow turbines in rivers and streams, and ocean current turbines. These devices operate by capturing the energy from natural water movements such as tides, river currents, and ocean currents through turbines or oth

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Solomon, Mithran Daniel, Wolfram Heineken, Marcel Scheffler, and Torsten Birth. "Energy Conveyor Belt—A Detailed Analysis of a New Type of Hydrokinetic Device." Energies 16, no. 5 (2023): 2188. http://dx.doi.org/10.3390/en16052188.

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Renewable energy technologies can help us combat climate change and hydrokinetic energy conversion systems could play a major role. The simplicity of hydrokinetic devices helps us to exploit renewable sources, especially in remote locations, which is not possible with conventional methods. A new type of hydrokinetic device called the Energy Conveyor Belt was designed, which works on the concept of conveyor belt technology. Numerical simulations are performed on the design of the Energy Conveyor Belt with Ansys FLUENT to optimize its performance. Some of the optimized models produced a maximum

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Thin, Thin Lwin. "Energy Management of Stand-Alone Hydrokinetic Power Supply System with Battery Energy Storage for Rural Electrification." 1. L.L. Ladokun et al., "Resource assessment and feasibility study for the generation of hydrokinetic power in the tailwaters of selected hydropower stations in Nigeria", Water Science 32, pp. 338-354, 2018. 2. Christopher Joshi Hansen and John Bower, "An Economic Evaluation of Small-scale Distributed Electricity Generation Technologies," Oxford Institute for Energy Studies, EL 05, Oct.2003. 3. R.Messenger and J. Ventre, "Photovoltaic Systems Engineering", CRC Press, pp.41-51, 2000. 4. Thin Thin Lwin, Wunna Swe and Lai Lai Wah, "Energy-Balance Control of Stand-Alone Hydrokinetic Power Supply System with Battery Energy Storage for Rural Electrification", Universal Academic Cluster International May Conference, Bangkok, PP 22-38, 16-17 May, 2019. 5. NRC-CHC. Ottawa "Assessment of Canada's Hydrokinetic Power Potential," National Research Council of Canada - Canadian Hydraulics Centre, March 2010. 6. M. J. Khan, G. Bhuyan, M. T. Iqbal, and J. E. Quaicoe, "Hydrokinetic energy conversion systems and assessment of horizontal and vertical axis turbines for river and tidal applications: A technology status review," Applied Energy, vol. 86, pp. 1823-1835. 7. Susanto J, Stamp S. Local installation methods for low head pico-hydropower in the Lao PDR. Renewable Energy 2012; 44:439e47. 8. Grabbe M, Yuen K, Goude A, Lalander E, Leijon M. Design of an experimental setup for hydro-kinetic energy conversion. The International Journal on Hydropower & Dams 2009;16(5):112e6. 9. Hugo Eduardo Mena Lopez, "Maximum Power Tracking Control Scheme for Wind Generator Systems", Dec, 2007. 10. Ahmadi S, Abdi S. Application of the Hybrid Big Bang–Big Crunch algorithm for optimal sizing of a stand-alone hybrid PV/wind/battery system. Sol Energy 2016; 134: 366-374. 11. M.S Behzadi and M. Niasati. 'Comparative performance analysis of a hybrid PV/FC/battery stand-alone system using different power management strategies and sizing approaches', International journal of hydrogen energy. Volume 40 (Issue 1). pp. 538-548, Jan, 2015. 12. Shiladitya Saha, Gaurav Agarwa, Kundan Kumar, "Study and Analysis of Three Phase SPWM Inverter", May, 2012. 13. Ahmadi S, Abdi S. Application of the Hybrid Big Bang–Big Crunch algorithm for optimal sizing of a stand-alone hybrid PV/wind/battery system. Sol Energy 2016; 134: 366-374. 5, no. 11 (2019): 20–32. https://doi.org/10.31695/IJASRE.2019.33583.

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<em>In this paper, optimal energy management for a stand-alone hydrokinetic power supply system with a battery storage system is proposed to sufficiently explore hydrokinetic energy for customers at the demand side. The management of power flow aims to optimal energy supply subject to a number of constraints, such as power balance, hydrokinetic power output, and battery capacity. The hydrokinetic turbine is connected with permanent magnet synchronous generator (PMSG), power electronic devices and battery bank. The battery bank is used to store the surplus of energy when the load demand is low

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5

Jump, Stephanie, Michael B. Courtney, and Andrew C. Seitz. "Vertical Distribution of Juvenile Salmon in a Large Turbid River." Journal of Fish and Wildlife Management 10, no. 2 (2019): 575–81. http://dx.doi.org/10.3996/022019-jfwm-008.

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Abstract We know very little about the vertical distribution of downstream-migrating juvenile Pacific salmon Oncorhynchus spp. in large rivers. It is important for project engineers and fisheries managers to understand the potential interactions of fishes with in-river hydrokinetic devices, which harness a river's energy by spinning a turbine to produce electrical current without damming or impounding water. Currently, several rural Alaskan communities are considering development projects for hydrokinetic devices, including projects in the Tanana River, near Nenana, Alaska. Therefore, the goal

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Bárcenas Graniel, Juan F., Jassiel V. H. Fontes, Hector F. Gomez Garcia, and Rodolfo Silva. "Assessing Hydrokinetic Energy in the Mexican Caribbean: A Case Study in the Cozumel Channel." Energies 14, no. 15 (2021): 4411. http://dx.doi.org/10.3390/en14154411.

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This paper presents a techno-economic assessment of hydrokinetic energy of Cozumel Island, where ocean currents have been detected, but tourist activities are paramount. The main objective of this research is to identify devices that have been used to harvest hydrokinetic power elsewhere and perform an economic analysis as to their implementation in the Mexican Caribbean. First, the energy potential of the area was evaluated using simulated data available through the HYCOM consortium. Then, for four pre-commercial and commercial turbines, technical and economic analyses of their deployments we

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Mannion, Brian, Vincent McCormack, Ciaran Kennedy, Seán B. Leen, and Stephen Nash. "An experimental study of a flow-accelerating hydrokinetic device." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 233, no. 1 (2018): 148–62. http://dx.doi.org/10.1177/0957650918772626.

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Tidal energy researchers and developers use experimental testing of scaled devices as a method of evaluating device performance. Much of the focus to date has been on horizontal axis turbines. This study is focused on a novel vertical axis turbine which incorporates variable-pitch blades and a flow accelerator. The research involves laboratory testing of scale model devices in a recirculating flume. Computational fluid dynamic modelling is used to reproduce the measured flow data to investigate disparities in experimental data. The results show that the device is capable of achieving localised

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Zanganeh, Jafar, Kiva Gwynne, Zhengbiao Peng, and Behdad Moghtaderi. "Investigation of Hydrokinetic Tidal Energy Harvesting Using a Mangrove-Inspired Device." Sustainability 15, no. 22 (2023): 15886. http://dx.doi.org/10.3390/su152215886.

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There is a trend towards harvesting tidal energy in shallow water. This study examined how tidal energy can be harvested using a device of oscillating cylinders inspired by the roots of mangroves. A specific focus was placed on optimising the configuration of these devices, informed by the computational fluid dynamics (CFD) analysis of wake interference in the von Kármán vortex street of the cylinders. A maximum efficiency of 13.54% was achieved at a peak voltage of 16 mV, corresponding to an electrical power output of 0.0199 mW (13.5% of the hydrokinetic energy of the water) and a power densi

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Nguyen, Quang Tan, Cong Phat Vo, Thanh Ha Nguyen, and Kyoung Kwan Ahn. "A Direct-Current Triboelectric Nanogenerator Energy Harvesting System Based on Water Electrification for Self-Powered Electronics." Applied Sciences 12, no. 5 (2022): 2724. http://dx.doi.org/10.3390/app12052724.

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This study aimed to develop a simple but effective mechanical-to-electrical energy conversion for harvesting hydrokinetic energy based on triboelectric nanogenerator (TENG) technology. Here, a direct-current fluid-flow-based TENG is reported as a potential solution to solve the inconvenience of directly powering electronic devices where direct-current (DC) power is required. The falling of a water droplet (about 1.06 mL) from an elastomeric pipe can generate an open-circuit voltage of ~35 V, short-circuit current of 3.7 µA, and peak power of 57.6 µW by passing through a separated electrode. No

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Kumar, Narendran, Christopher McCallum, Gary James Britton, and John Doran. "Are Subsidies Required for Marine Hydrokinetic Energy Devices in Ireland? A Technological and Site Assessment." International Journal of Materials, Mechanics and Manufacturing 8, no. 1 (2020): 12–16. http://dx.doi.org/10.18178/ijmmm.2020.8.1.476.

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11

FERNÁNDEZ JIMÉNEZ, AITOR, EDUARDO BLANCO MARIGORTA, AHMED GHARIB, VICTOR MANUEL FERNANDEZ PACHECO, and EDUARDO ALVAREZ ALVAREZ. "EVALUATION OF A VERTICAL AXIS HYDROKINETIC TURBINE FOR WATER CHANNELS." DYNA 96, no. 1 (2021): 194–99. http://dx.doi.org/10.6036/9883.

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The growing interest on low-carbon energy systems has been essential to develop new electricity devices based on renewable resources. In this context, channel turbines are an excellent alternative to supply demands that are isolated from power mains. These devices, which harness the kinetic term of the water current, can be installed in hydraulic channels, rivers, or estuaries. This article carries out an experimental characterization of a hydrokinetic turbine in a hydrodynamic water tunnel under low velocity conditions, so its behavior under open field conditions can be obtained. The results

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12

Gailiušis, Brunonas, Darius Jakimavičius, Diana Šarauskienė, and Aldona Jurgelėnaitė. "Assessment of hydrokinetic resources of small and medium-size rivers: the Lithuanian case." Baltica 30, no. 1 (2017): 23–30. http://dx.doi.org/10.5200/baltica.2017.30.03.

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The aim of the study is to assess hydrokinetic energy resources of small and medium-size rivers in Lithuania. The estimation of technical resources was carried out for river segments, where for average longterm runoff the flow velocity exceeded 0.4 m/s, and the average depth was more than 0.5 m. The results of hydrological studies were used to calculate the average flow rate and the relationship between flow velocity and river depth. The width and depth of the river channel was estimated in accordance with physical and geographical factors. Part of the favourable for use sites of rivers locate

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13

Lopez Mejia, Omar D., Oscar E. Mejia, Karol M. Escorcia, Fabian Suarez, and Santiago Laín. "Comparison of Sliding and Overset Mesh Techniques in the Simulation of a Vertical Axis Turbine for Hydrokinetic Applications." Processes 9, no. 11 (2021): 1933. http://dx.doi.org/10.3390/pr9111933.

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The application of Computational Fluid Dynamics (CFD) to energy-related problems has increased in the last decades in both renewable and conventional energy conversion processes. In recent years, the application of CFD in the study of hydraulic, marine, tidal, and hydrokinetic turbines has focused on the understanding of the details of the complex turbulent flow and also in improving the prediction of the performance of these devices. There are several complexities involved in the simulation of Vertical Axis Turbine (VAT) for hydrokinetic applications. One of them is the necessity of a dynamic

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14

Pucci, Micol, Stefania Zanforlin, Debora Bellafiore, Stefano Deluca, and Georg Umgiesser. "A Double Multiple Stream Tube (DMST) routine for site assessment to select efficient turbine aspect ratios and solidities in real marine environments." E3S Web of Conferences 312 (2021): 08001. http://dx.doi.org/10.1051/e3sconf/202131208001.

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A MATLAB routine, based on a Double Multiple Stream Tube model, developed to quickly predict the performance of cross-flow hydrokinetic turbine, here is presented. The routine evaluate flow data obtained with the open-source marine circulation code SHYFEM. The tool can establish the best locations to place tidal devices taking into account bathymetric constraints and the hydrokinetic potential. Hence, it can be used to decide the best set of geometrical parameters. The geometrical variables of our analysis are turbine frontal area, aspect ratio and solidity. Several sub-models, validated with

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15

Koutsogiannakis, Panagiotis E., Evangelos S. Filippas, and Kostas A. Belibassakis. "A Study of Multi-Component Oscillating-Foil Hydrokinetic Turbines with a GPU-Accelerated Boundary Element Method." Journal of Marine Science and Engineering 7, no. 12 (2019): 424. http://dx.doi.org/10.3390/jmse7120424.

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A biomimetic semi-activated oscillating-foil device with multiple foils in a parallel configuration is studied for the extraction of marine renewable energy. For the present investigation, an unsteady boundary element method (BEM) is used for the simulation of 3D lifting flows. For this work, the device is assumed to be submerged far from the free surface and the sea bottom. However, the geometry of the body and the initial shape of the wake are general. For the numerical simulations, a high performance in-house GPU-accelerated code (GPU-BEM) is developed. For the calculation of singular integ

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Moghadam, Hanieh, and Alejandra C. Ortiz. "Modeling Morphodynamic Impacts and Optimization of Marine Hydrokinetic Arrays in Shallow Offshore Environments." Water 15, no. 22 (2023): 3884. http://dx.doi.org/10.3390/w15223884.

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Marine hydrokinetic (MHK) devices hold the promise of expanding renewable energy production by tapping into the power of waves and currents for electricity generation. However, these devices remain in the developmental stage, necessitating research to understand their environmental impacts, lower operational costs, and prevent equipment failures. In this study, we investigate various MHK array configurations to gain insights into their effects on wave patterns, water flow, and sediment conditions, considering both short-term and long-term morphodynamic changes under average and extreme conditi

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Rowell, Matthew, Martin Wosnik, Jason Barnes, and Jeffrey P. King. "Experimental Evaluation of a Mixer-Ejector Marine Hydrokinetic Turbine at Two Open-Water Tidal Energy Test Sites in NH and MA." Marine Technology Society Journal 47, no. 4 (2013): 67–79. http://dx.doi.org/10.4031/mtsj.47.4.15.

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AbstractFor marine hydrokinetic energy to become viable, it is essential to develop energy conversion devices that are able to extract energy with high efficiency from a wide range of flow conditions and to field test them in an environment similar to the one they are designed to eventually operate in. FloDesign Inc. developed and built a mixer-ejector hydrokinetic turbine (MEHT) that encloses the turbine in a specially designed shroud that promotes wake mixing to enable increased mass flow through the turbine rotor. A scaled version of this turbine was evaluated experimentally, deployed below

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Diego, Betancur, Ardila Gonzalo, and Chica Lenin. "Design and hydrodynamic analysis of horizontal-axis hydrokinetic turbines with three different hydrofoils by CFD." Journal of Applied Engineering Science 18, no. 4 (2020): 529–36. http://dx.doi.org/10.5937/jaes0-25273.

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The conversion of kinetic energy that comes from low-head water currents to electrical energy has gained importance in recent years due to its low environmental and social impact. Horizontal axis hydrokinetic turbines are one of the most used devices for the conversion of this type of energy [1], being an emerging technology more studies are required to improve the understanding and functioning of these devices. In this context, the hydrodynamic study to obtain the characteristic curves of the turbines are fundamental. This article presents the design and hydrodynamic analysis for three horizo

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Aguilar, Jonathan, Ainhoa Rubio-Clemente, Laura Velasquez, and Edwin Chica. "Design and Optimization of a Multi-Element Hydrofoil for a Horizontal-Axis Hydrokinetic Turbine." Energies 12, no. 24 (2019): 4679. http://dx.doi.org/10.3390/en12244679.

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Hydrokinetic turbines are devices that harness the power from moving water of rivers, canals, and artificial currents without the construction of a dam. The design optimization of the rotor is the most important stage to maximize the power production. The rotor is designed to convert the kinetic energy of the water current into mechanical rotation energy, which is subsequently converted into electrical energy by an electric generator. The rotor blades are critical components that have a large impact on the performance of the turbine. These elements are designed from traditional hydrodynamic pr

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Doan, Minh N., Yuriko Kai, Takuya Kawata, and Shinnosuke Obi. "Flow Field Measurement of Laboratory-Scaled Cross-Flow Hydrokinetic Turbines: Part I—The Near-Wake of a Single Turbine." Journal of Marine Science and Engineering 9, no. 5 (2021): 489. http://dx.doi.org/10.3390/jmse9050489.

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Recent developments in marine hydrokinetic (MHK) technology have put the cross-flow (often vertical-axis) turbines at the forefront. MHK devices offer alternative solutions for clean marine energy generation as a replacement for traditional hydraulic turbines such as the Francis, Kaplan, and Pelton. Following previous power measurements of laboratory-scaled cross-flow hydrokinetic turbines in different configurations, this article presents studies of the water flow field immediately behind the turbines. Two independent turbines, which operated at an average diameter-based Reynolds number of ap

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Vadlamannati, Ashwin, Dillon Herbert, Kartik Naik, et al. "Pool-Based Tow System for Testing Tethered Hydrokinetic Devices Being Developed to Harvest Energy From Ocean Currents." Marine Technology Society Journal 57, no. 1 (2023): 88–97. http://dx.doi.org/10.4031/mtsj.57.1.11.

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Abstract The immense potential for ocean current energy harvesting is being actively explored as the push for renewable energy becomes more urgent. This paper demonstrates a tow testing platform built to examine and validate mathematical models related to the performance of tethered, underwater, hydrokinetic devices in development to harvest energy from ocean currents, and presents experimental results illustrating how such a system can be used. The platform has been modularly designed to allow for the testing of various tethered, underwater energy-generation systems, including kite-based syst

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Long, Wen, Ki Won Jung, Zhaoqing Yang, Andrea Copping, and Z. Daniel Deng. "Coupled Modeling of Hydrodynamics and Sound in Coastal Ocean for Renewable Ocean Energy Development." Marine Technology Society Journal 50, no. 2 (2016): 27–36. http://dx.doi.org/10.4031/mtsj.50.2.6.

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AbstractThe rapid growth of renewable offshore energy development has raised concerns that underwater noise from construction and operation of offshore devices may interfere with communication of marine animals. An underwater sound model was developed to simulate sound propagation from marine and hydrokinetic energy (MHK) devices or offshore wind (OSW) energy platforms. Finite difference methods were developed to solve the 3-D Helmholtz equation for sound propagation in the coastal environment. A 3-D sparse matrix solver with complex coefficients was formed for solving the resulting acoustic p

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23

Paranjape, Mandar Vasant, Sontyana Adonijah Graham, Harishkumarreddy Patnam, Punnarao Manchi, and Jae Su Yu. "Multimode Consecutively Connected Piston-Type Cylindrical Triboelectric Nanogenerators for Rotational Energy Harvesting and Sensing Application." International Journal of Energy Research 2023 (May 31, 2023): 1–11. http://dx.doi.org/10.1155/2023/1495217.

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A 3D-printed multicoupled piston-type cylindrical triboelectric nanogenerator (MPC-TENG) that utilizes contact-separation and lateral-sliding operational modes to harvest rotational motion and convert it into electricity was proposed. The electrical performances of the fabricated four similar piston-type cylindrical TENGs (PC-TENGs) were systematically investigated. TENGs in general produce electricity in an alternating-signal form which may not be used to directly power electronic devices. Therefore, all the individual PC-TENGs were connected with a simple external filter circuit to obtain di

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Malefaki, Iro E., and Kostas A. Belibassakis. "A Model for Performance Estimation of Flapping Foil Operating as Biomimetic Stream Energy Device." Journal of Marine Science and Engineering 9, no. 1 (2020): 21. http://dx.doi.org/10.3390/jmse9010021.

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During the recent period intensive research has focused on the advancement of engineering and technology aspects concerning the development and optimization of wave and current energy converters driven by the need to increase the percentage of marine renewable sources in the energy-production mix, particularly from offshore installations. Most stream energy-harvesting devices are based on hydro-turbines, and their performance is dependent on the ratio of the blade-tip speed to incident-flow speed. As the oncoming speed of natural-occurring currents varies randomly, there is a penalty for the l

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López, Omar, Nicolás Botero, Emerson Nunez, and Santiago Laín. "Performance Improvement of a Straight-Bladed Darrieus Hydrokinetic Turbine through Enhanced Winglet Designs." Journal of Marine Science and Engineering 12, no. 6 (2024): 977. http://dx.doi.org/10.3390/jmse12060977.

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The global climate and energy crisis have underscored the importance of sustainability in energy systems and their efficiency. In the case of vertical axis turbines (VATs) for hydrokinetic applications, the increment in efficiency is a topic of interest. Using winglets as passive flow control devices has the potential to improve the power coefficient of straight-bladed (SB) Darrieus turbines highly due to their impact in the dynamics of the flow close to the tip blade and the general impact in the hydrodynamic performance of each blade. The aim of the present work is to study the influence of

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Betancur Gómez, J. D., J. G. Ardila Marín, and E. L. Chica Arrieta. "Numerical and experimental performance analysis of a horizontal axis hydrokinetic turbine." Journal of Applied Research and Technology 21, no. 6 (2023): 965–74. http://dx.doi.org/10.22201/icat.24486736e.2023.21.6.1996.

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Alternative technologies such as hydrokinetic turbines can improve the electric energy conditions in rural or non interconnected areas with a low environmental impact. However, as they are an emergent device they must be studied further to better understand their phenomenology a nd the ways to improve their performance. The numerical and experimental evaluation of rotors under specific operation conditions depending on their hydrodynamic profiles result in efficiency curves for evaluated prototypes, so that devices are proposed which take full advantage of the flow conditions of a specific pla

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Klara, Gabdrahmanova, and Izmailova Gulnara. "RESEARCH OF THE POSSIBILITY OF USING THERMOELECTRIC ELEMENTS (TEE) IN WELLS WITH LOW GEOTHERMAL GRADIENT." Technology audit and production reserves 4, no. 1 (48) (2020): 43–45. https://doi.org/10.15587/2312-8372.2019.178482.

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<em>The object of research is wells with a low temperature gradient of less than 2–2.5 °С per 100 m (regions of Tataria, Bashkiria, Udmurtia, etc.). In studying the layout of a device for utilizing geothermal energy, a system analysis method was used. And in the course of the study of the sucker rod pumping unit (SRPU) and the electric centrifugal pumping unit (ECPU), the comparative analysis method is used.</em> <em>The paper discusses the possibility of energy savings in the exploitation of oil fields located in regions with low geothermal potential of development facilities. A met

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Hoerner, Stefan, Iring Kösters, Laure Vignal, et al. "Cross-Flow Tidal Turbines with Highly Flexible Blades—Experimental Flow Field Investigations at Strong Fluid–Structure Interactions." Energies 14, no. 4 (2021): 797. http://dx.doi.org/10.3390/en14040797.

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Oscillating hydrofoils were installed in a water tunnel as a surrogate model for a hydrokinetic cross-flow tidal turbine, enabling the study of the effect of flexible blades on the performance of those devices with high ecological potential. The study focuses on a single tip-speed ratio (equal to 2), the key non-dimensional parameter describing the operating point, and solidity (equal to 1.5), quantifying the robustness of the turbine shape. Both parameters are standard values for cross-flow tidal turbines. Those lead to highly dynamic characteristics in the flow field dominated by dynamic sta

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Kamal, Mustafa, Renzon Daniel Cosme Pecho, Hassan Falah Fakhruldeen, et al. "Photovoltaic/Hydrokinetic/Hydrogen Energy System Sizing Considering Uncertainty: A Stochastic Approach Using Two-Point Estimate Method and Improved Gradient-Based Optimizer." Sustainability 15, no. 21 (2023): 15622. http://dx.doi.org/10.3390/su152115622.

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In this paper, stochastic sizing of a stand-alone Photovoltaic/Hydrokinetic/Hydrogen storage energy system is performed with aim of minimizing the cost of project life span (COPL) and satisfying the reliability index as probability of load shortage (POLS). The stochastic sizing is implemented using a novel framework considering two-point estimate method (2m+1 PEM) and improved gradient-based optimizer (IGBO). The 2m+1 PEM is used to evaluate the impact of uncertainties of energy resource generation and system demand on sizing problem. The 2m+1 PEM utilizes the approximate method to account for

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Shen, Chunyun, Yubing Han, Shiming Wang, and Zekun Wang. "Influence of Airfoil Curvature and Blade Angle on Vertical Axis Hydraulic Turbine Performance in Low Flow Conditions." Water 17, no. 1 (2024): 11. https://doi.org/10.3390/w17010011.

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The vertical axis hydrokinetic turbine is increasingly being used as a renewable energy device to harness tidal energy. In coastal regions with low tidal flow velocities, vertical-axis hydrokinetic turbines often exhibit low energy conversion efficiency, limiting their engineering applications. However, research in this field lacks systematic reviews and reliable solutions for improving efficiency. The paper, based on the traditional vertical axis hydrokinetic turbines, utilized numerical calculations and experimental methods to investigate the effects of blade helicity and airfoil curvature o

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Латышева, M. Latysheva, Зеликов, et al. "Attachment energy saving gripping device for chokerless timber skidding when thinning." Forestry Engineering Journal 4, no. 2 (2014): 223–28. http://dx.doi.org/10.12737/4537.

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Hydrokinetic diagram of the device for chokerless skidding is presented. Chokerless device for logging includes a frame, capture with two jaws and hydraulic cylinder of jaw gripping attached to the hinged system of tractor, linked via a double-hinged capture unit to one end of the bell crank, and between the second end of the bell crank and the frame there is pivotally mounted hydraulic cylinder for additional amortization of oscillations of grapple. The mathematical model of the process of logging trees is made. It includes a differential equation of whips pack and differential equation of mo

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Wang, Dongrui, Xujing Tang, Tian Wang, Jinyang Ran, and Binkun Chen. "Optimized design study on the performance of hydrokinetic rim power generators." Journal of Physics: Conference Series 3043, no. 1 (2025): 012048. https://doi.org/10.1088/1742-6596/3043/1/012048.

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Abstract Flow-type current energy is characterized by abundant reserves, wide distribution, and continuous regeneration. How to improve the utilization efficiency of this energy source has become a focus of attention in many countries. In this paper, a new type of water flow energy rim power generation device is designed. Firstly, the research on the structure of the deflector was carried out, and the finite element analysis method was used to select a suitable deflector structure to realize the collection of flow-type water current energy incremental rate. Subsequently, the maximum speed was

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Barton, Samuel, Ted K. A. Brekken, and Yue Cao. "Extending Power Electronic Converter Lifetime in Marine Hydrokinetic Turbines with Reinforcement Learning." Applied Sciences 15, no. 5 (2025): 2512. https://doi.org/10.3390/app15052512.

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Hydrokinetic turbines (HKTs) are a promising renewable energy source due to the consistency and high energy density in river and tidal resources. One of the primary barriers to the widespread adoption of HKT technologies is a high levelized cost of energy (LCOE). Considering the marine operating environment, the operation and maintenance costs are substantial. The power electronic converter, a key element in the electrical energy conversion system, is a common point of failure in direct-drive turbine applications—leading to increased maintenance efforts. This work presents a reinforcement lear

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Kuila, Asim, Subhasish Das, and Asis Mazumdar. "A Comparative Analysis of Flow Fields around a Composite Hydrokinetic Device." Applied Mechanics and Materials 897 (April 2020): 173–78. http://dx.doi.org/10.4028/www.scientific.net/amm.897.173.

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. The flow pattern on the combined effect of a horizontal cylinder and a vertical plate is observed and analysed in this experimental study. The experiment was conducted with a 4 cm outer diameter cylinder arranged horizontally across flow above 2 cm from the bed and a vertical plate of 5 cm placed 9 cm downstream from cylinder surface reference as tilting flume bed surface. The water depth was maintained at 17 cm through a constant discharge of 35 lps in a re-circulating flume. Acoustic Doppler Velocimeter (ADV) was used to store the velocity fluctuation of velocity components and further use

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Pourmahdavi, Maryam, Mohammad Naghi Safari, and Shahram Derakhshan. "Numerical investigation of the power extraction mechanism of flapping foil tidal energy harvesting devices." Energy & Environment 30, no. 2 (2018): 193–211. http://dx.doi.org/10.1177/0958305x18787320.

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The flapping foil hydrokinetics turbine is a new method to generate energy from incoming flow field. The numerical simulations have been performed computationally by using two-dimensional unsteady Reynolds-averaged Navier–Stokes equations. It was found that the maximum energy efficiency reached about 35.2% when the reduced frequency was 0.11; at this time, the foil experienced a light dynamic stall and two opposite-sign vorticities were shed from the foil per half of the cycle. This report also studied the energy extraction performance of flapping foil device and the correlation between the fo

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Armañanzas, Javier, Marina Alcalá, Juan Pablo Fuertes, Javier Leon, Alexia Torres, and Miguel Gil. "Design and Experimentation of a Hydrokinetic Turbine for Electricity Generation in Closed Pipes." WSEAS TRANSACTIONS ON FLUID MECHANICS 19 (February 23, 2024): 64–71. http://dx.doi.org/10.37394/232013.2024.19.7.

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In the present research work, a device for electrical energy generation to be used in water pipelines has been designed, simulated, and tested. To achieve this, a study of the most influential parameters involved in the experiment has been carried out and both, the turbine model and the geometry of the experimental test pipe, have been selected through CFD simulations. Next, the Design of Experiments (DOE) has been used to obtain the configuration with a higher energy extraction from running water. Finally, the turbine and the test pipe section have been manufactured by 3D printing and the exp

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Fernández-Jiménez, Aitor, Eduardo Álvarez-Álvarez, Mario López, et al. "Power Performance Assessment of Vertical-Axis Tidal Turbines Using an Experimental Test Rig." Energies 14, no. 20 (2021): 6686. http://dx.doi.org/10.3390/en14206686.

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This article presents the characteristic curves of a vertical-axis hydrokinetic tidal turbine of the Darrieus subtype aimed at meeting the electricity demand of port facilities located at harbors and estuaries with low water-speed conditions. The turbine was tested in the water-current flume of the University of Santiago de Compostela for several flow conditions with different water heights and water speeds. Blockage conditions were tested by examining the results from two groups of tests: with and without an accelerator device that restricts the flow around the rotor. The tip speed ratio and

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Kerishmaa Theavy Kunalan, Cheng Yee Ng, and Nauman Riyaz Maldar. "A performance investigation of a multi-staging hydrokinetic turbine for river flow." Progress in Energy and Environment 17, no. 1 (2022): 17–31. http://dx.doi.org/10.37934/progee.17.1.1731.

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Our world has been relying on fossil fuel, a non-renewable energy that is depleting day by day and negatively impacting the environment. Hydropower is known to contribute a significant portion of the renewable power production. Dams has been the most common technique to generate hydropower. However, such scheme was not able to support the rural areas as it requires large areas and huge amount of water resource. Savonius hydrokinetic turbine (HKT) has been suggested as the device for a small-scale application as it can generate power from low-velocity river flow with less installation cost. Wit

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Koschier, Angelo V., and Hagen R. Mauch. "Advantages of the LV100 as a Power Producer in a Hybrid Propulsion System for Future Fighting Vehicles." Journal of Engineering for Gas Turbines and Power 122, no. 4 (2000): 693–98. http://dx.doi.org/10.1115/1.1287585.

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The core of any hybrid propulsion system is a high power density, low weight, and fuel efficient electric energy producer. The LV100 recuperated turbine engine is such a system. This engine is well suited to provide electric power efficiently at a volume and weight significantly lower than current systems. Originally designed for vehicular use and environment to drive a Hydrokinetic transmission, the turbine’s high output speed lends itself to incorporate into the engine design an advanced generating device. This LV100 engine-based electric energy producer will provide in excess of 1MW of elec

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Lee, Jiyong, Mirko Musa, Chris Feist, Jinjin Gao, Lian Shen, and and Michele Guala. "Wake Characteristics and Power Performance of a Drag-Driven in-Bank Vertical Axis Hydrokinetic Turbine." Energies 12, no. 19 (2019): 3611. http://dx.doi.org/10.3390/en12193611.

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Preliminary design of a new installation concept of a drag-driven vertical axis hydrokinetic turbine is presented. The device consists of a three-bladed, wheel-shaped, turbine partially embedded in relatively shallow channel streambanks. It is envisioned to be installed along the outer banks of meandering rivers, where the flow velocity is increased, to maximize energy extraction. To test its applicability in natural streams, flume experiments were conducted to measure velocity around the turbine and power performance using Acoustic Doppler Velocimetry and a controlled motor drive coupled with

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Staines, Garrett, Gayle Zydlewski, and Haley Viehman. "Changes in Relative Fish Density Around a Deployed Tidal Turbine during on-Water Activities." Sustainability 11, no. 22 (2019): 6262. http://dx.doi.org/10.3390/su11226262.

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Global interest in mitigating climate change effects is a driver for the development of renewable energy sources. In-stream tidal power, a type of marine hydrokinetic (MHK) energy uses tidal currents to generate electricity and is one example of developing a renewable energy industry. Effects and impacts on fishes in areas of tidal power development are a consideration, and presently there are many unanswered questions in this field of research. Knowledge of how fish use these areas before and after device installation is essential to informing regulators for decision-making. We attempted a Be

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Uskov, Vladimir, Elena Raetskaya, and Alina Popikova. "Decomposition method in the study load-loading forestry manipulator mechanism mathematical model." BIO Web of Conferences 145 (2024): 03009. http://dx.doi.org/10.1051/bioconf/202414503009.

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In this article a new hydrokinematic diagram of the boom lifting mechanism with an energy recuperation system in starting and braking modes is presented. The mathematical model of the lifting mechanism of a forest manipulator with a hydro-mechanical damper taking into account the rigidityof the metal structure of the boom and the hydraulic drive, described by a system of nonlinear differential equations of the second order, has been developed. In linearised formulation it is reduced to a second order differential equation with operator coefficients. The methods of operator theory and functiona

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Z. Daniel, Deng, Carlson Thomas J., Fu Tao, et al. "Design and Implementation of a Marine Animal Alert System to Support Marine Renewable Energy." Marine Technology Society Journal 47, no. 4 (2013): 113–21. http://dx.doi.org/10.4031/mtsj.47.4.2.

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AbstractPower extracted from fast-moving tidal currents has been identified as a potential commercial-scale source of renewable energy. Marine and hydrokinetic (MHK) device developers and utilities are pursuing deployment of prototype tidal turbines to assess technology viability, site feasibility, and environmental interactions. Deployment of prototype turbines requires environmental review and permits from a range of regulatory authorities. Ensuring the safety of marine animals, particularly those under protection of the Endangered Species Act of 1973 and the Marine Mammal Protection Act of

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Glushkov, Sotir, Aleksandr Rybak, Petr Popikov, Vladimir Uskov, Dmitriy Bogdanov, and Andrey Konyuhov. "MODELING OF THE WORKING ENERGY-SAVING PROCESSES OF THE HYDRAULIC DRIVE OF THE LIFTING MECHANISM OF A FORESTRY MANIPULATOR." Forestry Engineering Journal 11, no. 4 (2022): 88–99. http://dx.doi.org/10.34220/issn.2222-7962/2021.4/8.

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At present Russia has adopted a course towards the creation of competitive machinery and equipment. This also applies to mobile manipulator-type forestry machines. Therefore, the design and creation of forestry manipulators with an energy-saving hydraulic drive is an urgent task. The analysis of research of technological, dynamic and kinematic characteristics of manipulator-type machines is given. A new hydrokinematic diagram of the boom lifting mechanism with an energy recuperation system in starting and braking modes is presented. A mathematical model of the boom lifting process has been dev

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Trubin, Aleksey, Yu Baranov, and Nataliya Sakovich. "EFFECTS OF THE WORKING FLUID INERTIA ON THE HYDROHAMMER OPERATIONAL PARAMETERS." Transport engineering 2022, no. 10 (2022): 49–55. http://dx.doi.org/10.30987/2782-5957-2022-10-49-55.

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The study objective is to justify the parameters that ensure efficient energy conversion of the hydrohammer. Research methods include review, analysis and generalization of research results and experience in designing hydraulic devices; mathematical modeling based on laws of kinematics and dynamics of solid, liquid and gas; theoretical research based on numerical experiments. The novelty of the work is in the development of a mathematical model of a hydraulic hammer describing the cooperation of the percussive mechanism, distributor, hydraulic pneumatic accumulators and hydraulic drive. The st

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Narendran, Kumar, McCallum Christopher, James Britton Gary, and Doran John. "Are Subsidies Required for Marine Hydrokinetic Energy Devices in Ireland? A Technological and Site Assessment." February 11, 2020. https://doi.org/10.18178/ijmmm.2020.8.1.476.

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To achieve the renewable energy target, it is necessary to carry out technological assessment of marine hydrokinetic energy devices. The objective of this study is to present the suitability of existing devices in the established resource sites in Ireland. The analysis is based on the technical data of the turbines and tidal current velocity profiles from the established numerical model. From this study, we conclude that there are certain locations where all kinds of marine hydrokinetic devices could be deployed, while in a few locations’ technology feasibility is limited.

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Meekins, Ryan, Stephen Adams, Kevin Farinholt, Nathan Hipwell, Michael Desrosiers, and Peter Beling. "Impact Damage Prediction for Wave Energy Converters." Annual Conference of the PHM Society 9, no. 1 (2017). http://dx.doi.org/10.36001/phmconf.2017.v9i1.2454.

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Marine and hydrokinetic energy is of growing interest across the globe because it has the potential to provide a large source of renewable energy from the world’s oceans and rivers. These marine and hydrokinetic devices, such as wave energy converters, must operate remotely in all weather conditions, including severe storms. Thus, these devices can suffer from structural damage affecting their performance and lifespan. Therefore, there is interest in developing structural health monitoring systems that can identify new damage, estimate its severity, and then make a decision to provide crews wi

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Miller, Veronica B., and Laura A. Schaefer. "Dynamic Modeling of Hydrokinetic Energy Extraction." Journal of Fluids Engineering 132, no. 9 (2010). http://dx.doi.org/10.1115/1.4002431.

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The world is facing an imminent energy crisis. In order to sustain our energy supply, it is necessary to advance renewable technologies. Despite this urgency, however, it is paramount to consider the larger environmental effects associated with using renewable resources. Hydropower, in the past, has been seen as a viable resource to examine, given that its basics of mechanical to electrical energy conversion seem to have little effect on the environment. Discrete analysis of dams and in-stream diversion set-ups, although, has shown otherwise. Modifications to river flows and changes in tempera

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González-Montijo, Miguel, Robynne Murray, Ryan Beach, et al. "Design, Manufacture and Testing of an Open-Source Benchmark Composite Hydrokinetic Turbine Blade." Proceedings of the European Wave and Tidal Energy Conference 15 (September 2, 2023). http://dx.doi.org/10.36688/ewtec-2023-418.

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In a trend towards clean energy alternatives, recent years have seen great strides in the marine energy space. This has resulted in a pressing need for the design, development, and validation of novel energy harvesting technologies such as hydrokinetic devices, which capture kinetic energy from waves, tides, and currents. However, these devices span numerous concepts and designs that often lack solid benchmark research that can be freely referenced. This work focuses on the design process of an open-source composite hydrokinetic turbine blade for a three-bladed marine turbine rotor assembly wi

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Niebuhr, CM, M. Van Dijk, and JN Bhagwan. "Development of a design and implementation process for the integration of hydrokinetic devices into existing infrastructure in South Africa." Water SA 45, no. 3 July (2019). http://dx.doi.org/10.17159/wsa/2019.v45.i3.6740.

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In South Africa there is currently no notable use of modern small-scale hydrokinetic (HK) energy systems, mainly due to formerly low-cost coal-powered electricity. This renewable energy option makes use of the kinetic energy from flowing water, rather than potential energy, which is more often used in conventional hydropower. Updated refined versions of this technology are now being investigated and manufactured due to the global drive towards reducing carbon emissions and increasing energy efficiency. These modular units allow for installation of HK turbines into existing water infrastructure

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