Optimization of Active/Passive Flow Control Parameters on Airfoils at Transonic Speeds

Autor:	Bedri Yagiz, Y. Volkan Pehlivanoglu
Rok vydání:	2011
Předmět:	Physics::Fluid Dynamics Airfoil Drag coefficient Lift coefficient Flow control (fluid) Control theory Mass flow Aerospace Engineering Aerodynamics Reynolds-averaged Navier–Stokes equations Transonic Mathematics
Zdroj:	Journal of Aircraft. 48:212-219
ISSN:	1533-3868 0021-8669
DOI:	10.2514/1.c031066
Popis:	To improve aerodynamic performance, the active and passive flow control parameters are optimized in different combinations. The flow is simulated by solving the Navier–Stokes equations and a turbulence model. The active flow control is applied using flow suction or blowing on an airfoil, and its design variables are set to be the location and the angle of the suction/blowing port and the mass flow coefficient at this port. Airfoil surfaces are parameterized by using Bezier curves to optimize an airfoil shape in a passive way. To validate the computational methodology, successful comparisons have beenmadewith available data. A reel coded genetic algorithm is used in all optimization processes. For the demonstration problems considered herein, the best result is provided by the sequential optimization process, which results in 575.8% increment in aerodynamic performance, 183.76% increment in lift coefficient, and 68% decrease in drag coefficient.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::087939d914f72c3571034483ce7cf689 https://doi.org/10.2514/1.c031066 Zobrazit plný text záznamu