Effect of Closure Coefficients of K-Ω SST Turbulence Model on Predicting Stall Characteristics of The Airfoil

Autor:	Changping Liang
Rok vydání:	2020
Předmět:	Airfoil Physics History Turbulence Stall (fluid mechanics) Mechanics Computer Science Applications Education
Zdroj:	Journal of Physics: Conference Series. 1600:012032
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/1600/1/012032
Popis:	The two-dimensional numerical simulation for NACA0015 airfoil and S325 airfoil were conducted with k-ω SST turbulence model. For the k-ω SST turbulence model could not predict the airfoil stall characteristics accurately, the non-equilibrium turbulence transport nature was systematically analyzed. The study showed that: the turbulent viscosity scope simulated by the original k-ω SST turbulence model was smaller which resulting in the model could not accurately simulate the turbulence transport properties in the separation zone; By increasing β* or decreasing α1 can improve the capabilities for predicting the transport characteristics of non-equilibrium turbulent, and then improve the accuracy of numerical simulation for stall characteristics of the airfoil, it also helps to improve the accuracy of numerical simulation of wind turbine blades.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1a144f479ea5c8aef86e9293313ab892 https://doi.org/10.1088/1742-6596/1600/1/012032 Zobrazit plný text záznamu