2026· E3S Web of Conferences· 0 citations· 15 references
Abstract
The increasing demand for renewable energy has spurred the development of environmentally friendly technologies. Hydrokinetic turbines, which generate electricity from flowing water without dams or reservoirs, are a promising option. Among these, the Savonius turbine is ideal for low-flow conditions because of its simple design, ability to start on its own, and low maintenance needs. This study examines the performance of a side-by-side Savonius hydrokinetic turbine at inlet flow speeds of 0.2 m/s and 0.48 m/s using Computational Fluid Dynamics (CFD). The effect of TipSpeed Ratio (TSR) on performance was analyzed through the power coefficient (Cp) and moment coefficient (Cm) across a TSR range of 0.2-2.0. Transient simulations with the k-ω SST turbulence model captured unsteady flow around the rotating blades. Results show improved turbine performance with higher flow speeds. At 0.2 m/s, the maximum Cp was 0.180 at TSR = 1.0, and the highest Cm was 0.211 at TSR = 0.6. At 0.48 m/s, the maximum Cp reached 0.180 at TSR = 1.0, and the maximum Cm was 0.75 at TSR = 0.4. These results offer valuable insights for optimizing side-by-side Savonius turbines in low-flow water conditions.
Reliable electricity supply in Colombia’s Non-Interconnected Zones requires sustainable and low-cost energy technologies. Vertical-axis hydrokinetic turbines are promising for this purpose; however, their relatively low power coefficient remains a major challenge. This study combines transient 2D and 3D k–ω SST computa...
A. Rodriguez-Valencia, Emerson Escobar-Nunez, Guillermo Andrés Jaramillo-Pizarro· Processes· 0 citations
Ocean current energy is abundant, yet its exploitation is severely constrained by the low-velocity conditions typical of most marine environments, where conventional lift-type turbines exhibit poor self-starting capability and low efficiency. This review provides the first comprehensive synthesis of research on free-st...
Ke Song, Ji Yao, Hui-Ting Huan et al.· Journal of Marine Science an...· 0 citations
This research aims to improve Savonius turbine’s self-starting capability by increasing the static torque coefficient using several methods. In this research, a channel is involved and an additional turbine is applied to optimize the energy harvested from hydropower using numerical approach. To solve the governing equa...
Hildan Fahrizal Nur Faurizki, T. Yuwono, Savitri Ramadhani et al.· The International Journal of...· 0 citations
Water is potential alternative energy to be developed to reduce carbon emissions that the harm of environment. The beneficiary equipment that can be used are a Savonius Hydrokinetic Turbine. It is simple design and construction and can be worked at low water flow speeds. The drag force becomes the main driving force in...
Ilham Priharnanda, T. Yuwono· MATEC Web of Conferences· 0 citations
Innovations continue to be developed in the field of new and renewable energy, particularly in hydropower, namely the use of pumps as turbines to replace conventional turbines in decentralized energy systems for areas not yet connected to the central power grid, in order to meet basic needs. The object of this study is...
Nur Pratiwi Septiriani, N. Salam, A. A. Mochtar· Eastern-European Journal of...· 0 citations
Pump-turbines often experience performance deterioration under high-load conditions beyond their best efficiency point, while the underlying flow mechanisms remain insufficiently understood. In this study, we investigate the relationship between internal flow structures and energy performance in a pump-turbine operatin...
Ling-Kai Zhu, Kai Liang, Yunkuan Yu et al.· Applied Sciences· 0 citations
We use cookies to run the site and, with your consent, for analytics and to show ads.
See our Cookie Policy.
