Performance Improvement of a Darrieus Hydrokinetic Turbine by Interaction and Diffusion Effects

Dasom Jeong; Jin-Soon Park; Jin Hwan Ko

doi:10.4217/OPR.2024006

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2024 Vol.46, Issue 1 Preview Page Next Page

Article

Performance Improvement of a Darrieus Hydrokinetic Turbine by Interaction and Diffusion Effects 상호작용과 확산 효과를 이용한 다리우스 유체동력 터빈의 성능 향상

30 March 2024. pp. 83-92

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Abstract

In this study, first, we adopted a twin configuration of a Darrieus hydrokinetic turbines that can bring about an improvement in efficiency through positive interaction and obtained the optimal shape through parametric analysis of the small-scale turbine model by computational fluid dynamic simulations. Next, the effect of performance improvement was examined for symmetrical and asymmetrical ducts. The results show that the asymmetrical duct that utilizes diffusion effects has a comparative advantage in terms of efficiency and drag over the symmetrical one. However, the advantage of the Darrieus turbine, which has flow-directional independency, is lost in the case of the presented configuration; thus, we introduced the idea of a passive yaw-controller that adapts to the variation of the flow-direction that does not require additional energy consumption. In conclusion, such efforts and adjustments to enhance the performance of the Darrieus turbine by utilizing the interaction and diffusion effects discussed in this study will be helpful in securing competitiveness against other types of hydrokinetic turbines.

Keywords

Darrieus turbine

Interaction, Diffusion

Performance improvement

Computational Fluid dynamics

References

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국문 참고자료의 영문표기 English translation / Romanization of references originally written in Korean

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Information

Publisher :Korea Institute of Ocean Science and Technology
Publisher(Ko) :한국해양과학기술원
Journal Title :Ocean and Polar Research
Journal Title(Ko) :Ocean and Polar Research
Volume : 46
No :1
Pages :83-92
Received Date : 2024-01-08
Revised Date : 2024-02-27
Accepted Date : 2024-03-11
DOI :https://doi.org/10.4217/OPR.2024006

Ocean and Polar Research ISSN:2234-7313(Online) Ocean and Polar Research

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국문 참고자료의 영문표기 English translation / Romanization of references originally written in Korean