TY - GEN
T1 - Investigation of active flow control on aerodynamic performance of HALE UAV airfoil
AU - Xu, Xiaoping
AU - Zhou, Zhou
AU - Fan, Ruijun
AU - Wang, Junli
PY - 2010
Y1 - 2010
N2 - Numerical studies were conducted to investigate the beneficial effects of using arrays of jets on the aerodynamic characteristics of the High-altitude Long-endurance Unmanned Aerial Vehicle (HALE-UAV) airfoil. Flowfield predictions were made by using an unsteady, two-dimensional, compressible Navier-Stokes flow solver. An unsteady surface transpiration boundary condition was enforced over a user-specified portion of the airfoil's upper surface to emulate the time-varied velocity out and into the airfoil's surface. Five flow-control techniques for the "quasi-Global Hawk" airfoil are investigated, as steady blowing, steady suction, unsteady blowing, unsteady suction and synthetic jets. A physical analysis of the influence on the control efficiency is proposed to provide some guidelines for practice. Our numerical results have indicated that active flow control techniques can, with the careful selection of their position and style, be used to enhance the aerodynamic performance of airfoils.
AB - Numerical studies were conducted to investigate the beneficial effects of using arrays of jets on the aerodynamic characteristics of the High-altitude Long-endurance Unmanned Aerial Vehicle (HALE-UAV) airfoil. Flowfield predictions were made by using an unsteady, two-dimensional, compressible Navier-Stokes flow solver. An unsteady surface transpiration boundary condition was enforced over a user-specified portion of the airfoil's upper surface to emulate the time-varied velocity out and into the airfoil's surface. Five flow-control techniques for the "quasi-Global Hawk" airfoil are investigated, as steady blowing, steady suction, unsteady blowing, unsteady suction and synthetic jets. A physical analysis of the influence on the control efficiency is proposed to provide some guidelines for practice. Our numerical results have indicated that active flow control techniques can, with the careful selection of their position and style, be used to enhance the aerodynamic performance of airfoils.
KW - Active flow control
KW - Aerodynamic performance
KW - Computational fluid dynamics(CFD)
KW - Navier-stokes equations
KW - Numerical simulation
KW - Time-dependent component
UR - http://www.scopus.com/inward/record.url?scp=77951175557&partnerID=8YFLogxK
U2 - 10.1109/ICCMS.2010.98
DO - 10.1109/ICCMS.2010.98
M3 - 会议稿件
AN - SCOPUS:77951175557
SN - 9780769539416
T3 - ICCMS 2010 - 2010 International Conference on Computer Modeling and Simulation
SP - 123
EP - 126
BT - ICCMS 2010 - 2010 International Conference on Computer Modeling and Simulation
T2 - 2010 International Conference on Computer Modeling and Simulation, ICCMS 2010
Y2 - 22 January 2010 through 24 January 2010
ER -