Hydrodynamic Performance, Optimization, and Design of Marine Turbines

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Ocean Engineering".

Deadline for manuscript submissions: closed (10 March 2026) | Viewed by 824

Special Issue Editor


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Guest Editor
Department of Mechanical System Engineering, Jeju National University, Jeju 63243, Republic of Korea
Interests: fluid dynamics; marine renewable energy systems (specifically hydrokinetic turbines)

Special Issue Information

Dear Colleagues,

Marine renewable energy has emerged as a promising contributor to the global transition toward sustainable power generation. Among the various technologies, marine turbines—encompassing tidal, current, and wave-driven systems—play a crucial role in harnessing the vast kinetic and hydrodynamic potential of the oceans. Understanding and improving the hydrodynamic performance of marine turbines is vital for ensuring efficiency, durability, and environmental compatibility. Recent advances in computational fluid dynamics (CFD), experimental testing, and field deployments have provided valuable insights into flow behavior, turbulence interaction, and energy extraction mechanisms. Optimization methods, including blade geometry refinement, array configuration strategies, and control techniques, have further enhanced turbine performance while minimizing wake effects and ecological impact. In parallel, innovative design approaches aim to improve adaptability to site-specific conditions, reduce structural loading, and extend operational lifespan. This Special Issue focuses on the integration of performance analysis, optimization frameworks, and novel design concepts to advance the development of high-efficiency marine turbines. By combining theoretical modeling, laboratory investigations, and real-world applications, it seeks to provide a comprehensive understanding that will guide future innovations in marine renewable energy systems.

Dr. Jin Hwan Ko
Guest Editor

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Keywords

  • hydrodynamic performance
  • marine turbines
  • tidal energy
  • ocean current energy
  • computational fluid dynamics (CFD)
  • optimization methods
  • turbine array design
  • wake interactions
  • structural loading
  • marine renewable energy

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Published Papers (1 paper)

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Research

17 pages, 4748 KB  
Article
Investigation on Wake Characteristics of Two Tidal Stream Turbines in Tandem Using a Mobile Submerged PIV System
by Sejin Jung, Heebum Lee, In Sung Jang, Seong Min Moon, Heungchan Kim, Chang Hyeon Seo, Jihoon Kim and Jin Hwan Ko
J. Mar. Sci. Eng. 2026, 14(2), 135; https://doi.org/10.3390/jmse14020135 - 8 Jan 2026
Viewed by 415
Abstract
Understanding wake interactions between multiple tidal stream turbines is essential for optimizing the performance and layout of tidal energy farms. This study investigates the hydrodynamic behavior of two horizontal-axis tidal turbines arranged in tandem under simplified inflow conditions, where the incoming flow was [...] Read more.
Understanding wake interactions between multiple tidal stream turbines is essential for optimizing the performance and layout of tidal energy farms. This study investigates the hydrodynamic behavior of two horizontal-axis tidal turbines arranged in tandem under simplified inflow conditions, where the incoming flow was dominated by the streamwise velocity component without imposed external disturbances. Wake measurements were conducted in a large circulating water tunnel using a mobile, submerged particle image velocimetry (PIV) system capable of long-range, high-resolution measurements. Performance tests showed that the downstream turbine experienced a decrease of approximately 9% in maximum power coefficient compared to the upstream turbine due to reduced inflow velocity and increased turbulence generated by the upstream wake. Phase-averaged PIV results revealed the detailed evolution of velocity deficit, turbulence intensity, turbulent kinetic energy, and tip vortex structures. The tip vortices shed from the upstream turbine persisted over a long downstream distance, remaining coherent up to 10D and merging with those generated by the downstream turbine. These merged vortex structures produced elevated turbulence and complex flow patterns that significantly influenced the downstream turbine’s operating conditions. The results provide experimentally validated insight into turbine-to-turbine wake interactions and highlight the need for high-fidelity wake data to support array optimization and numerical model development for tidal stream turbine array. Full article
(This article belongs to the Special Issue Hydrodynamic Performance, Optimization, and Design of Marine Turbines)
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