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Numerical investigation on wind turbine vortex generators employing transition models
Vortex generators (VGs) have been proposed as a type of credible equipment to promote performance of the inner part of wind blades. In the inboard part of the blade of the large scale wind turbine, flow separation and transition phenomena often take place. In this paper, a DU-W2-250 blade section with 5 pairs of VGs is modeled using k-ω shear-stress transport (SST) model and γ- transition model. The aim of this paper is to investigate the effect of transition on performance of the blade section, from lift coefficient, lift-drag ratio, friction coefficient, and pressure distribution of the surface. The research results show that transition model results agree with test results far better than the SST model, whether in lift coefficient curve or in drag-lift ratio. The paper obtains the transition point of the blade surface, knows the state and its variation of flow on the blade surface, and pressure distribution under the effect of the transition.
Numerical investigation on wind turbine vortex generators employing transition models
Vortex generators (VGs) have been proposed as a type of credible equipment to promote performance of the inner part of wind blades. In the inboard part of the blade of the large scale wind turbine, flow separation and transition phenomena often take place. In this paper, a DU-W2-250 blade section with 5 pairs of VGs is modeled using k-ω shear-stress transport (SST) model and γ- transition model. The aim of this paper is to investigate the effect of transition on performance of the blade section, from lift coefficient, lift-drag ratio, friction coefficient, and pressure distribution of the surface. The research results show that transition model results agree with test results far better than the SST model, whether in lift coefficient curve or in drag-lift ratio. The paper obtains the transition point of the blade surface, knows the state and its variation of flow on the blade surface, and pressure distribution under the effect of the transition.
Numerical investigation on wind turbine vortex generators employing transition models
Zhao, Zhenzhou (author) / Li, Tao (author) / Wang, Tongguang (author) / Liu, Xuan (author) / Zheng, Yuan (author)
2015-11-01
10 pages
Article (Journal)
Electronic Resource
English
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