CFD Analysis of NACA4415 Airfoil with ƴ – Re₀ Model considering Natural Transition

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2015-06

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Virginia Tech

Abstract

Airfoil analysis is essential to wind turbine aerodynamics. In typical operating conditions, airfoils undergo transition from laminar to turbulent flow in the boundary layer in a manner that must be modeled accurately to predict airfoil lift and drag. There are different modes of transition (e.g. natural, by-pass, wake induced, reversed, separated flow) and modeling them is not straight-forward. Over the years, diversified predictions have been developed for the various modes. One of the popular transition models is the local correlation-based ƴ - Re₀ model of Menter et al. (Menter et al., 2004). The model requires data correlations for the transition length and the critical Reynolds numbers.

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Islam, M., Langfeldt, F., Juretic, F., Guerrero, J., & Wood, D. H. (2015, June). Cfd analysis of naca4415 airfoil with ƴ – Re₀ model considering natural transition. Paper presented at the North American Wind Energy Academy 2015 Symposium, Blacksburg, VA.