A potential flow 2-D vortex panel model: Applications to vertical axis straight blade tidal turbine

Wang, L.B.; Zhang, L.; Zeng, Nian-dong

doi:10.1016/j.enconman.2006.06.017

Cited by 52 publications

(28 citation statements)

References 6 publications

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“…Ferreira et al [22] use detached eddy simulation (DES) focusing on 2D dynamic stall and validate the results with particle image velocimetry data. It is to be noted that in the Darrieus-type VAWT, a cyclic phenomenon of dynamic stall and vortex separation is present [8,22,23]. Amet et al [23] provided a detailed numerical analysis of the physical phenomena that occur during dynamic stall where the compressible RANS κ − ω model and multi-block mesh structure were used.…”

Section: Introductionmentioning

confidence: 99%

“…Strickland et al's model [7] is based on replacement of the rotor blade by a bound vortex filament, called a lifting line, whose strength is a function of the azimuthal position. Wang et al [8] present a potential flow 2D vortex panel model (VPM2D) applied to the vertical axis straight blade variable pitch turbine; however, this model does not include the consideration of the phenomenon of dynamic stall. Experimental tests can be performed by means of wind tunnel or open-field measurement in order to evaluate the real performance of wind turbines.…”

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%

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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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“…In accordance with the simulation of Savonius wind turbine [13][14][15][16][17][18][19][20][21][22], it could draw lessons from the effective digging to the ''external potentiality'' for improving the power efficiency. In fact, the ''inner potential'' for improving power efficiency is still need to dig.…”

Section: Geometric Distribution Of Five-blade Vawtmentioning

confidence: 99%

Effect of blade installation angle on power efficiency of resistance type VAWT by CFD study

Zheng

Tian

et al. 2014

Int J Energy Environ Eng

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Renewable energy is an inevitable choice to meet the demands of energy resource. In the 21st century, one of the serious problems facings us is the energy resources that restrict the social progress and sustainable development. Environmental pollution and fossil energy resources shortage force people to explore and use new energy resources. The aim of this paper is to study the effect of blade installation angle on power coefficient of a five-blade resistance type vertical axis wind turbine using

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“…Aerodynamic models still cannot meet the demands for various purposes, although the streamtube and vortex models have been improved for many times, including multiple streamtube model [10], double multiple streamtube model [11], FEVDTM [12], and VPM2D method [13]; more details can be found in the literature [14][15][16]. But with the rapid development of computational fluid dynamics (CFD), which has not only accelerated the design process but also has brought down the overall cost of design, the CFD become an attractive solution for aerodynamic performance prediction.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Performance Prediction of Straight-Bladed Vertical Axis Wind Turbine Based on CFD

Zhang

Liang

Liu

et al. 2013

Advances in Mechanical Engineering

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Numerical simulation had become an attractive method to carry out researches on structure design and aerodynamic performance prediction of straight-bladed vertical axis wind turbine, while the prediction accuracy was the major concern of CFD. Based on the present two-dimensional CFD model, a series of systematic investigations were conducted to analyze the effects of computational domain, grid number, near-wall grid, and time step on prediction accuracy. And then efforts were devoted into prediction and analysis of the overall flow field, dynamic performance of blades, and its aerodynamic forces. The calculated results agree well with experimental data, and it demonstrates that RNG k-turbulent model is great to predict the tendency of aerodynamic forces but with a high estimate value of turbulence viscosity coefficient. Furthermore, the calculated tangential force is more dependent on near-wall grid and prediction accuracy is poor within the region with serious dynamic stall. In addition, blades experience mild and deep stalls at low tip speed ratio, and thus the leading edge separation vortex and its movement on the airfoil surface have a significant impact on the aerodynamic performance.

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A potential flow 2-D vortex panel model: Applications to vertical axis straight blade tidal turbine

Cited by 52 publications

References 6 publications

3D CFD Analysis of a Vertical Axis Wind Turbine

3D CFD Analysis of a Vertical Axis Wind Turbine

Effect of blade installation angle on power efficiency of resistance type VAWT by CFD study

Aerodynamic Performance Prediction of Straight-Bladed Vertical Axis Wind Turbine Based on CFD

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