دانلود مقاله Prediction of Laminar Separation Bubble over Wind Turbine Blade Based on Three-equation k-ω Turbulence Model
سال انتشار: ۱۳۸۶
محل انتشار: هفتمین همایش انجمن هوافضای ایران
تعداد صفحات: ۷
Reza Taghavi-Zenouz – Assistant Professor, Department of Mechanical Engineering , Iran University of Science and Technology
Majed Etemadi – Ph. D. Student
A recently developed transitional model for boundary layer flows has been examined over a wind turbine blade under two different Reynolds numbers, with one of them suitable for the occurrence of laminar separation bubbles on its upper and lower surfaces. This model is a new approach to RANS-based method which combines advantages of the most efficient methods presented so far. Proposed model is based on eddy-viscosity concept and includes three transport equations of turbulent kinetic energy, KT , laminar kinetic energy, KL , and dissipation rate frequency, ω. To evaluate the performance of this new model in resolving boundary layer transition, final results have been compared to those obtained through application of conventional standard k-ω , k-ω SST turbulence models and fully laminar model.