STUDY ON INFLUENCE OF V-GROOVE ON FLOW FIELD DISTRIBUTION AND AERODYNAMIC PERFORMANCE OF BLUNT TRAILING EDGE AIRFOIL

Yang Rui; Gu Enxin; Zhou Nannan; Yang Wei; Wen Weiyue; Chen Zhilong

doi:10.19912/j.0254-0096.tynxb.2020-0811

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (4) : 402-408. DOI: 10.19912/j.0254-0096.tynxb.2020-0811

Topics on Key Technologies for Safety of Electrochemical Energy Storage Systems and Echelon Utilization of Decommissioned Power Batteries

STUDY ON INFLUENCE OF V-GROOVE ON FLOW FIELD DISTRIBUTION AND AERODYNAMIC PERFORMANCE OF BLUNT TRAILING EDGE AIRFOIL

Yang Rui^1,2, Gu Enxin¹, Zhou Nannan¹, Yang Wei¹, Wen Weiyue¹, Chen Zhilong¹

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Abstract

Based on the k-ω SST turbulence model, use the commercial CFD tool ANSYS Fluent 16.0 to numerically simulate the DU35-17 original airfoil, blunt trailing edge modified airfoil, and V-groove blunt trailing edge airfoil. The lift-drag coefficient, flow field distribution and surface pressure coefficient before and after the airfoil modification are compared and analyzed. The results show that the airfoil is configured with V-grooves while blunt trailing edge modification is performed. By changing the pressure distribution at the airfoil trailing edge and the flow distribution on the airfoil surface, it has a positive effect on the suppression of flow separation. The blunt trailing edge airfoil with V-groove can increase the pressure coefficient difference between the upper and lower airfoil surfaces of the airfoil, and reduce the flow deceleration caused by the gas viscosity in the airfoil boundary layer, thereby achieving the effect of reducing drag and increasing rise. To arrange V-grooves can effectively improve the maximum lift coefficient and stall angle of attack, reduce the leading edge pressure fluctuations, and improve the aerodynamic performance of the airfoil.

Key words

wind turbines / airfoil / drag reduction / numerical simulation / V-groove / blunt trailing edge airfoils / aerodynamic performance

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Yang Rui, Gu Enxin, Zhou Nannan, Yang Wei, Wen Weiyue, Chen Zhilong. STUDY ON INFLUENCE OF V-GROOVE ON FLOW FIELD DISTRIBUTION AND AERODYNAMIC PERFORMANCE OF BLUNT TRAILING EDGE AIRFOIL[J]. Acta Energiae Solaris Sinica. 2022, 43(4): 402-408 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0811

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