Abstract
Abstract. Multi-element ducts are used to improve the aerodynamic performance of ducted wind turbines (DWTs). Steady-state, two-dimensional computational fluid dynamics (CFD) simulations are performed for a multi-element duct geometry consisting of a duct and a flap; the goal is to evaluate the effects on the aerodynamic performance of the radial gap length and the deflection angle of the flap. Solutions from inviscid and viscous flow calculations are compared. It is found that increasing the radial gap length results in an augmentation of the total thrust generated by the DWT, whereas a larger deflection angle has an opposite effect. Reasonable to good agreement is seen between the inviscid and viscous flow calculations, except for multi-element duct configurations characterized by large flap deflection angles. The viscous effects become stronger at large flap deflection angles, and the inviscid calculations are incapable of taking this phenomenon into account.
Subject
Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment
Reference18 articles.
1. Abe, K. and Ohya, Y.: An investigation of flow fields around flanged diffusers using CFD, J. Wind Eng. Indust. Aerodynam., 92.3, 315–330, 2004. a
2. Aranake, A. C., Lakshminarayan, V. K., and Duraisamy, K.: Computational analysis of shrouded wind turbine configurations using a 3-dimensional RANS solver, Renew. Energy, 75, 818–832, 2015. a
3. Bontempo, R. and Manna, M.: Effects of the duct thrust on the performance of ducted wind turbines, Energy, 99, 274–287, 2016. a, b, c
4. de Oliveira, G., Pereira, R. B., Ragni, D., Avallone, F., and van Bussel, G. J. W.: How does the presence of a body affect the performance of an actuator disk?, in: Journal of Physics: Conference Series, Vol. 753, IOP Publishing, 2016. a
5. de Vries, O.: Fluid dynamic aspects of wind energy conversion, No. AGARD-AG-243, Advisory Group for Aerospace Research and Development NEUILLY-SUR-SEINE, France, 1979. a, b
Cited by
17 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献