Performance analysis and offshore applications of the diffuser augmented tidal turbines

Diffuser-augmented tidal turbines (DATTs) are determined and regarded as efficient in converting tidal energy. In this paper, which is stipulated by a large group of researchers, the highly established module performance of a diffuser turbine is numerically studied by the Computational Fluid Dynamic...

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Published inShips and offshore structures Vol. 18; no. 1; pp. 68 - 77
Main Authors Liu, Weixing, Liu, Lei, Wu, Haitao, Chen, Yulong, Zheng, Xiongbo, Li, Ningyu, Zhang, Zhiyang
Format Journal Article
LanguageEnglish
Published Cambridge Taylor & Francis 02.01.2023
Taylor & Francis Ltd
Subjects
Blade tips
Computational fluid dynamics
diffuser
Diffusers
Energy efficiency
Fluid dynamics
horizontal axis turbine
Hydrodynamics
Mathematical models
Numerical analysis
numerical simulation
Offshore
Tidal energy
Tidal power
Turbine engines
Turbines
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Abstract Diffuser-augmented tidal turbines (DATTs) are determined and regarded as efficient in converting tidal energy. In this paper, which is stipulated by a large group of researchers, the highly established module performance of a diffuser turbine is numerically studied by the Computational Fluid Dynamics (CFD). Numerical analysis shows that the pressure distributions near the blade tip gradually change for a DATT than a non-diffuser augmented tidal turbine (NDATT), which indicates that the diffuser can effectively reduce the loss of blade tip. The practical assessment through anticipated and assured procedure in the application of this turbine was conducted offshore at Daishan Island and observed to have slightly higher energy efficiency than the experimental model.
AbstractList Diffuser-augmented tidal turbines (DATTs) are determined and regarded as efficient in converting tidal energy. In this paper, which is stipulated by a large group of researchers, the highly established module performance of a diffuser turbine is numerically studied by the Computational Fluid Dynamics (CFD). Numerical analysis shows that the pressure distributions near the blade tip gradually change for a DATT than a non-diffuser augmented tidal turbine (NDATT), which indicates that the diffuser can effectively reduce the loss of blade tip. The practical assessment through anticipated and assured procedure in the application of this turbine was conducted offshore at Daishan Island and observed to have slightly higher energy efficiency than the experimental model.
Author Liu, Weixing
Zheng, Xiongbo
Wu, Haitao
Zhang, Zhiyang
Chen, Yulong
Liu, Lei
Li, Ningyu
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10.1016/j.enconman.2012.02.006
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Snippet Diffuser-augmented tidal turbines (DATTs) are determined and regarded as efficient in converting tidal energy. In this paper, which is stipulated by a large...
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SubjectTerms Blade tips
Computational fluid dynamics
diffuser
Diffusers
Energy efficiency
Fluid dynamics
horizontal axis turbine
Hydrodynamics
Mathematical models
Numerical analysis
numerical simulation
Offshore
Tidal energy
Tidal power
Turbine engines
Turbines
Title Performance analysis and offshore applications of the diffuser augmented tidal turbines
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