Development of a shrouded wind turbine with a flanged diffuser

Ohya, Yuji; Karasudani, Takashi; Sakurai, Akira; Abe, Ken; Inoue, M.

doi:10.1016/j.jweia.2008.01.006

Cited by 267 publications

(200 citation statements)

References 8 publications

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“…The authors published several other papers on the numerical and experimental studies they did on the flanged diffuser (Abe and Ohya, 2004;Abe et al, 2006;Ohya and Karasudani, 2010;Ohya et al, 2008;Toshimitsu et al, 2008). Widnall (2009) following the method of Lewis (1991), developed an incompressible potential flow vortex method to study the flow field in a ducted wind turbine.…”

Section: Diffuser Augmented Wind Turbinesmentioning

confidence: 99%

Effect of shroud on the performance of horizontal axis hydrokinetic turbines

2015

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Section: Diffuser Augmented Wind Turbinesmentioning

confidence: 99%

Effect of shroud on the performance of horizontal axis hydrokinetic turbines

2015

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“…42) where and are density and dynamic viscosity of the flowing fluid respectively, c denotes the chord length of the airfoil and is the relative wind speed. Relative wind speed ⃗ is vector sum of free wind speed and the blade speed at mid-radius of the rotor.…”

Section: Research Scopementioning

confidence: 99%

“…Probably, the first attempt to make a complete SSWT was performed by Hirahara et al [34]. They developed a 4-bladed 50 cm diameter small wind turbine called reported with the flanged diffuser [42]. However, incorporation of diffuser makes the wind turbine quite bulky, which increases the overall aerodynamic drag and thus requires strong mounting.…”

Section: Literature Reviewmentioning

confidence: 99%

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Small-scale wind energy portable turbine (SWEPT)

Kishore

Coudron

Priya

2013

Journal of Wind Engineering and Industrial Aerodynamics

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ABSTRACTguidance, support and encouragement. He has been a great mentor and I have learned a lot from him, both in academic research and in personal life. He didn't only provide me the necessary infrastructure and resources to complete this project, but also gave me enough freedom and opportunities to test and implement my own ideas. He always encouraged me to think 'out of box' and allowed me to work on several other projects apart from the subject of this thesis. Prof. Priya has his own style; his dedication towards the work, his courage and conviction to take new challenges, his optimism, and the most importantly, his attachment with the students are few of the many qualities that has always inspired me and will always motivate me in future to move ahead.I would also like to extend my heartfelt gratitude to Prof. Walter O'Brien and Prof.Danesh Tafti for mentoring me in many academic courses and serving on my MS committee.

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“…One notable research area which has received much attention in the augmentation of the power output of a BWT is the use of a diffuser with a flange (a broad ring at the exit of the diffuser) [3][4][5][6]. The authors of [7] investigated optimal dimensions of the flange and developed a prototype flanged-diffuser.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Power Output of a Bare Wind Turbine by the Use of a Plain Conical Diffuser

2018

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Abstract:A plain conical diffuser is optimized to augment the wind speed at the throat of the diffuser. The diffuser is used in the construction of a diffuser augmented wind turbine (DAWT) to augment the power output of a bare wind turbine (BWT). Experiments with empty conical diffusers were done to determine optimum geometrical parameters for the diffuser to achieve maximum wind speed augmentation. Using the obtained optimum geometrical parameters, an optimized plain conical DAWT was designed, constructed, and field tested. A twin decentralized wind energy system which comprised a BWT and the optimized plain conical DAWT was erected. The electrical power output from these systems was measured and compared. The optimized plain conical DAWT reduced the cut-in wind speed of a BWT from 2.5 m/s to 1.6 m/s. The power output was increased by a factor of 2.5. This power output is comparable to that of flanged diffusers. However, flanged-DAWTs are more inert due to the addition of the flange. Its response to wind speed and direction is slow as compared to plain conical DAWT. Thus, it cannot fully exploit the potential of the wind. Also, the addition of the flange increases its production cost. Therefore, plain conical DAWT can replace flanged-DAWT in wind power augmentation.

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Development of a shrouded wind turbine with a flanged diffuser

Cited by 267 publications

References 8 publications

Effect of shroud on the performance of horizontal axis hydrokinetic turbines

Effect of shroud on the performance of horizontal axis hydrokinetic turbines

Small-scale wind energy portable turbine (SWEPT)

Optimization of the Power Output of a Bare Wind Turbine by the Use of a Plain Conical Diffuser

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