The Impact of Airfoil Selection on the Design of Small Horizontal Axis Wind Turbines

Kanya, Benjamin; Visser, Kenneth D.

doi:10.2514/6.2010-1583

Cited by 6 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…From this solution, the axial velocity field was then extracted, Figure 5b, and used as an 15 input for Clarkson's in-house Blade Element Momentum (BEM) code, mRotor. The rotor design in mRotor uses a fairly standard BEM strategy by Glauert to determine the optimum rotor shape (Kanya and Visser, 2010). Figure 6 illustrates the typical forces and velocities, including the axial interference factor 'a'.…”

Section: Numerical Approachmentioning

confidence: 99%

“…Airfoils, like these, work well in low Reynolds number environments and an additional goal was a cheaper manufacturing strategy. Since the optimum TSR is a function of the airfoil performance (Kanya and Visser, 2010), the selection of a less than optimal airfoil can be a better choice for a lower TSR, rather than having a better performing airfoil operating in an off-design condition.…”

Section: Numerical Approachmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Validation of a Ducted Wind Turbine Design Strategy

Kanya¹,

Visser²

2017

Preprint

Self Cite

View full text Add to dashboard Cite

Abstract.A synergistic design strategy for ducted horizontal axis wind turbines (DWTs), utilizing the numerical solution of a ducted actuator disk system as input conditions for a modified blade element momentum method, is presented.Computational results of the ducted disk have shown that the flow field for a DWT differs substantially from that of a conventional open rotor. The rotor plane velocity is higher in the ducted flow field, and more importantly, the axial velocity component varies radially. An experimental full scale 2.5m rotor and duct were designed, using this strategy, and tested at 10 the University of Waterloo's wind turbine test facility. Experimental results indicated a very good correlation of the data with the numerical predictions, that being a doubling of the power output at a given velocity.

show abstract

Section: Numerical Approachmentioning

confidence: 99%

Section: Numerical Approachmentioning

confidence: 99%

Experimental Validation of a Ducted Wind Turbine Design Strategy

Kanya¹,

Visser²

2017

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Unfortunately, such claims by inventors that they have "beaten Betz" have only served to give DWTs a bad reputation. Many studies have investigated the feasibility and associated augmentation factors seen in DWTs in an effort to further their development (Hu and Cheng, 2008;Igra, 1976Igra, , 1984Hansen et al, 2000;Werle and Presz Jr., 2008;van Bussel, 2007;Oman et al, 1977;Leoffler Jr. and Vanderbilt, 1978;Ohya et al, 2002Ohya et al, , 2008Politis and Koras, 1995;and Jamieson, 2009) with the largest prediction of 7 by Badawy and Aly (2000); however, conclusions have been quite varied. Werle and Presz Jr. (2008) used fundamental momentum principles and concluded that the possible augmentation factor could only approach 2 and that earlier studies had incorrect assumptions, leading to overly optimistic predictions.…”

Section: Introductionmentioning

confidence: 99%

Experimental validation of a ducted wind turbine design strategy

Kanya

Visser

2018

Wind Energ. Sci.

Self Cite

View full text Add to dashboard Cite

Abstract. A synergistic design strategy for ducted horizontal axis wind turbines (DWTs), utilizing the numerical solution of a ducted actuator disk system as the input condition for a modified blade element momentum method, is presented. Computational results of the ducted disk have shown that the incoming flow field for a DWT differs substantially from that of a conventional open rotor. The rotor plane velocity is increased in the ducted flow field, and, more importantly, the axial velocity component varies radially. An experimental full-scale 2.5 m rotor and duct were designed, using this numerical strategy, and tested at the University of Waterloo's wind turbine test facility. Experimental results indicated a very good correlation of the data with the numerical predictions, namely a doubling of the power output at a given velocity, suggesting that the numerical strategy can provide a means for a scalable design methodology.

show abstract

“…Kanya and Visser [4] investigated the impact of airfoil selection on the design of small horizontal axis wind turbines. They performed a numerical study using BEM code to assess the impact of L=D on the optimum operating tipspeed ratio condition.…”

Section: Introductionmentioning

confidence: 99%

Parametric analysis of Joukowski airfoil for 10-kW horizontal axis windmill

Ismail

Canale

Lino

2018

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

Small wind turbines are mainly used in rural areas, farms and isolated communities. These machines are supposed to be able to work within a wide range of wind speeds and usually are not equipped with pitching control mechanisms. The main objective of this study is to investigate Joukowski airfoil as an alternative for use in small power windmills (compared with the Solar Energy Research Institute, SERI airfoil as a reference) and investigate the effects on the aerodynamic performance caused by varying the tip-speed ratio and the number of blades as well as the use of blades composed of multiple airfoils. The SERI airfoils were treated using Xfoil software while the Joukowski airfoils were calculated by analytical transformation and then treated by Xfoil to estimate the aerodynamic characteristics for the different operating conditions. The data from the selected airfoils were used in a home-built numerical code based on the blade element momentum (BEM) theory. Predictions from this numerical code were compared with available experimental and numerical results to validate the numerical code. The validated code was then used to investigate parametrically two rotors of 10 kW each and verify the effects of varying the blade geometry and the tip-speed ratio on the aerodynamic loads. The Joukowski blades show higher values of torque and power at low speeds and the short chord makes these blades light and easy to startup when compared with the SERI airfoil.

show abstract

The Impact of Airfoil Selection on the Design of Small Horizontal Axis Wind Turbines

Cited by 6 publications

References 7 publications

Experimental Validation of a Ducted Wind Turbine Design Strategy

Experimental Validation of a Ducted Wind Turbine Design Strategy

Experimental validation of a ducted wind turbine design strategy

Parametric analysis of Joukowski airfoil for 10-kW horizontal axis windmill

Contact Info

Product

Resources

About