Double-multiple streamtube model for studying vertical-axis wind turbines

Paraschivoiu, Ion

doi:10.2514/3.23076

Cited by 144 publications

(92 citation statements)

References 8 publications

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“…This allows one to determine the performance considering the local Reynolds number rather than an average. Further improvement in the multiple streamtube model has been reported by Paraschivoiu [5], namely the double multiple streamtube model (DSMT); the difference with respect to Strickland's model is that upwind and downwind passages through each streamtube are considered separately. Low solidity with a low chord-radius ratio (c/r ≤ 0.1) can be modeled well using a DMST analysis, such as the one developed by Paraschivoiu [5].…”

Section: Introductionmentioning

confidence: 99%

“…Further improvement in the multiple streamtube model has been reported by Paraschivoiu [5], namely the double multiple streamtube model (DSMT); the difference with respect to Strickland's model is that upwind and downwind passages through each streamtube are considered separately. Low solidity with a low chord-radius ratio (c/r ≤ 0.1) can be modeled well using a DMST analysis, such as the one developed by Paraschivoiu [5]. Brusca et al [6], using a calculation code based on the multiple stream tube model, analyze the link between the aspect ratio of a VAWT with straight blade; it was highlighted that the power coefficient is influenced by both rotor solidity and the Reynolds number, concluding that a low aspect ratio has several advantages compared to higher ratio values.…”

Section: Introductionmentioning

confidence: 99%

“…Being axisymmetric, they are omnidirectional turbines, which respond well to changes in wind direction. In order to determine the performance of the VAWT, analytical and numerical approaches, as well as experimental tests are generally used [2][3][4][5][6][7][8][9][10][11]. Among others, Sutherland et al [2] report on the streamtube model and vortex models that allow one to analyze the aerodynamic response of VAWTs.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

3D CFD Analysis of a Vertical Axis Wind Turbine

et al. 2015

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To analyze the complex and unsteady aerodynamic flow associated with wind turbine functioning, computational fluid dynamics (CFD) is an attractive and powerful method. In this work, the influence of different numerical aspects on the accuracy of simulating a rotating wind turbine is studied. In particular, the effects of mesh size and structure, time step and rotational velocity have been taken into account for simulation of different wind turbine geometries. The applicative goal of this study is the comparison of the performance between a straight blade vertical axis wind turbine and a helical blade one. Analyses are carried out through the use of computational fluid dynamic ANSYS R Fluent R software, solving the Reynolds averaged Navier-Stokes (RANS) equations. At first, two-dimensional simulations are used in a preliminary setup of the numerical procedure and to compute approximated performance parameters, namely the torque, power, lift and drag coefficients. Then, three-dimensional simulations are carried out with the aim of an accurate determination of the differences in the complex aerodynamic flow associated with the straight and the helical blade turbines. Static and dynamic results are then reported for different values of rotational speed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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3D CFD Analysis of a Vertical Axis Wind Turbine

et al. 2015

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“…The improved model predicted the instantaneous aerodynamic blade forces and the induced velocities better than the single streamtube model. Paraschivoiu (1988) presented a double multiple streamtube model to predict the performance of Darrieus wind turbine. The DMSM gave a better prediction than the original streamtube model.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of vortex dynamics in an H-rotor vertical axis wind turbine

Chen

Lian

2015

Engineering Applications of Computational Fluid Mechanics

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We study the vortex dynamics of a two-dimensional H-rotor wind turbine using a Navier-Stokes solver. The k-ε turbulence model with the wall function is used as the turbulence closure. A sliding mesh technique is employed to handle the blade rotation. The vortex-blade interaction is systematically investigated and its influence on the force generation is discussed. Our simulations show that the vortex-blade interaction largely depends on the solidity and tip speed ratio. We further study the impact of solidity on the turbine performance. Our simulations show that the peak torque per blade decreases with the solidity while the peak torque azimuthal angle increases with the solidity. Our simulations also show that the increase in the azimuthal angle is more significant at low tip speed ratios than at high tip speed ratios. The impact of blade thickness is studied. Our simulations show that a thicker airfoil has a higher torque coefficient than a thinner airfoil. However, because for the thinner airfoil its peak torque occurs at a high tip speed ratio, the thinner airfoil has an overall higher power coefficient than the thicker airfoil.

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“…However, the investigations on the blade airfoils of VAWTs are far fewer than those have been carried out on the HAWTs, and the parametric investigation on a wide range of designs is experimentally expensive and time taking procedure. In this context, Marten et al [5] have developed a fast processing algorithm 'QBlade' based on double multiple stream tube (DMST) model as described in [6,7]. The application of DMST for performance prediction of the VAWTs were also observed in the studies of Beri and Yao [8], Biadgo et al [9] and Wang et al [10].…”

Section: Introductionmentioning

confidence: 99%

Design of an Offshore Three-Bladed Vertical Axis Wind Turbine for Wind Tunnel Experiments

Roy

Branger

Luneau³

et al. 2017

Volume 10: Ocean Renewable Energy

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The rapid shrinkage of fossil fuel sources and contrary fast-growing energy needs of social, industrial and technological enhancements, necessitate the need of different approaches to exploit the various renewable energy sources. Among the several technological alternatives, wind energy is one of the most emerging prospective because of its renewable, sustainable and environment friendly nature, especially at its offshore locations. The recent growth of the offshore wind energy market has significantly increased the technological importance of the offshore vertical axis wind turbines, both as floating or fixed installations. Particularly, the class of liftdriven vertical axis wind turbines is very promising; however, the existing design and technology is not competent enough to meet the global need of offshore wind energy. In this context, the project AEROPITCH co-investigated by EOLFI, CORETI and IRPHE aims at the development of a robust and sophisticated offshore vertical axis wind turbine, which would bring decisive competitive advantage in the offshore wind energy market. In this paper, simulations have been performed on the various airfoils of NACA 4-series, 5-series and Selig profiles at different chord Reynolds numbers of 60000, 100000 and 140000 using double multiple streamtube model with tip loss correction. Based on the power coefficient, the best suitable airfoil S1046 has been selected for a 3-bladed vertical axis wind turbine. Besides the blade profile, the turbine design parameters such as aspect ratio and solidity ratio have also been investigated by varying the diameter and chord of the blade. Further, a series of wind tunnel experiments will be performed on the developed wind turbine, and the implementation of active pitch control in the developed turbine will be investigated in future research.

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Double-multiple streamtube model for studying vertical-axis wind turbines

Cited by 144 publications

References 8 publications

3D CFD Analysis of a Vertical Axis Wind Turbine

3D CFD Analysis of a Vertical Axis Wind Turbine

Numerical investigation of vortex dynamics in an H-rotor vertical axis wind turbine

Design of an Offshore Three-Bladed Vertical Axis Wind Turbine for Wind Tunnel Experiments

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