نوع مقاله : مقاله پژوهشی
نویسندگان
1 پژوهشگر،گروه آیرودینامیک، دانشکده مهندسی هوافضا، دانشگاه علوم و فنون هوایی شهید ستاری، تهران، ایران.
2 گروه آیرودینامیک، دانشکده مهندسی هوافضا، دانشگاه علوم و فنون هوایی شهید ستاری، تهران،ایران
3 گروه آیرودینامیک، دانشکده تحصیلات تکمیلی، دانشگاه علوم و فنون هوایی شهید ستاری، تهران، ایران.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In this study, the effect of single and double synthetic jet actuators on the aerodynamic efficiency of the airfoil wing of a maneuverable aircraft has been numerically investigated using Fluent software. The flow around the airfoil has been solved using the turbulent unsteady Reynolds-averaged Navier-Stokes equations with k–ε Turbulence model in Fluent software. Investigations have been carried out at a Mach number of 0.15 (corresponding to a Reynolds number of two million) and at angles of attack from 0 to 19 degrees. The grid with 106469 elements is organized so that the y+ parameter on the airfoil boundary is in order 1 to discretize the computational domain. In these investigations, the single and double synthetic jet actuators are placed in different positions on the upper surface of the airfoil to obtain the most suitable position in terms of the best aerodynamic efficiency. The results of this numerical study showed that for a single synthetic jet, the highest aerodynamic efficiency value of the synthetic is in the 8.63% chord from the airfoil leading edge. Because in this position, the size of the separation bubble on the airfoil becomes smaller. Also, for the double synthetic jet, the highest aerodynamic efficiency is obtained in the synthetic jet positions of 8.63% and 12% chord from the airfoil leading edge. The highest percentage increase in single jet mode is 23.72%, and in double jet mode, it is 27.4%.
کلیدواژهها [English]