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Wind tunnel and numerical study of a small vertical axis wind turbine

Howell, Robert; Qin, Ning; Edwards, Jonathan; Durrani, … - In: Renewable Energy 35 (2010) 2, pp. 412-422

and two- and three-dimensional unsteady computational fluid dynamics (CFD) models were generated to help understand the …

Persistent link: https://www.econbiz.de/10010806127

Comparison of different numerical approaches to the study of the H-Darrieus turbines start-up

Rossetti, A.; Pavesi, G. - In: Renewable Energy 50 (2013) C, pp. 7-19

the present work. The Blade Element Momentum (BEM) approach was compared with two and three-dimensional CFD simulations …

Persistent link: https://www.econbiz.de/10010805378

An analysis of the transient forces acting on Savonius rotors with different aspect ratios

Jaohindy, Placide; McTavish, Sean; Garde, François; … - In: Renewable Energy 55 (2013) C, pp. 286-295

computational fluid dynamics (CFD). Unsteady, Reynolds Averaged Navier–Stokes CFD simulations were conducted using two different …

Persistent link: https://www.econbiz.de/10011045059

Steady and rotating computational fluid dynamics simulations of a novel vertical axis wind turbine for small-scale power generation

McTavish, S.; Feszty, D.; Sankar, T. - In: Renewable Energy 41 (2012) C, pp. 171-179

computational fluid dynamics (CFD) software CFdesign 2010. A validation study consisting of steady and rotating simulations was … conducted using a Savonius rotor and good agreement was obtained with experimental data. Steady two-dimensional CFD simulations … three-dimensional CFD simulations were conducted at several tip speed ratios with a freestream speed of 6 m/s. The predicted …

Persistent link: https://www.econbiz.de/10011045149

A numerical investigation into the influence of unsteady wind on the performance and aerodynamics of a vertical axis wind turbine

Danao, Louis Angelo; Edwards, Jonathan; Eboibi, Okeoghene; … - In: Applied Energy 116 (2014) C, pp. 111-124

Numerical simulations using RANS-based CFD have been utilised to carry out investigations on the effects of steady and … unsteady wind on the performance of a wind tunnel scale VAWT. Using a validated CFD model, steady wind simulations at U∞=7m …

Persistent link: https://www.econbiz.de/10011041434

A numerical analysis of unsteady inflow wind for site specific vertical axis wind turbine: A case study for Marsabit and Garissa in Kenya

Wekesa, David Wafula; Wang, Cong; Wei, Yingjie; Kamau, … - In: Renewable Energy 76 (2015) C, pp. 648-661

(2°19′N, 37°58′E) and Garissa (0°28′S,39°38′E), were selected. A CFD analysis method was used to evaluate both unsteady … validated CFD model, unsteady wind simulations were performed and the results obtained compared with empirical methods. Compared …

Persistent link: https://www.econbiz.de/10011189957

Finite element structural study of the VGOT wind turbine

Otero, Alejandro D.; Ponta, Fernando L. - In: International Journal of Global Energy Issues 21 (2004) 3, pp. 221-235

We analyse the implementation of the finite element method to simulate the structural behaviour of the blade-wagons of variable-geometry oval-trajectory (VGOT) Darrieus wind turbines. The key feature of a VGOT machine is that each blade, instead of rotating around a central vertical axis, slides...

Persistent link: https://www.econbiz.de/10008538988

Finite element structural study of the VGOT wind turbine

Otero, Alejandro D.; Ponta, Fernando L. - In: International Journal of Global Energy Issues 21 (2004) 3, pp. 221-235

Persistent link: https://www.econbiz.de/10005751622

Robust VAWT control system evaluation by coupled aerodynamic and electrical simulations

Goude, Anders; Bülow, Fredrik - In: Renewable Energy 59 (2013) C, pp. 193-201

A control system for a vertical axis wind turbine is presented. The electric load is determined solely from the rotational velocity and the characteristics of the turbine, thus measurements of the incoming wind speed are not required. The control system is evaluated with an aerodynamic vortex...

Persistent link: https://www.econbiz.de/10011046113