TY - GEN
T1 - Asymmetric sinusoidal motion effect on aerodynamics of a plunging airfoil
AU - Zhang, Yi
AU - Yuan, Rui Shan
AU - Lu, Kun
AU - Xie, Yong Hui
PY - 2013
Y1 - 2013
N2 - The effect of asymmetric sinusoidal motion on plunging airfoil aerodynamics was studied by numerical simulations for 2-D flow around a NACA0012 airfoil at Re=1.35×105. Various unsteady parameters (nondimensional plunging amplitude, h, reduced frequency, k) were applied to investigate the effect of asymmetry parameter S on the instantaneous force coefficient and flow pattern. It is found that more thrust can be generated by asymmetric sinusoidal plunging motion compared with pure sinusoidal case, and the thrust force generated increases with asymmetry. Moreover, a significant difference in the wake pattern at different values of S is observed. The trailing wake is displaced downward relative to the free stream for S less than 0.5, and displaced upward for S larger than 0.5.
AB - The effect of asymmetric sinusoidal motion on plunging airfoil aerodynamics was studied by numerical simulations for 2-D flow around a NACA0012 airfoil at Re=1.35×105. Various unsteady parameters (nondimensional plunging amplitude, h, reduced frequency, k) were applied to investigate the effect of asymmetry parameter S on the instantaneous force coefficient and flow pattern. It is found that more thrust can be generated by asymmetric sinusoidal plunging motion compared with pure sinusoidal case, and the thrust force generated increases with asymmetry. Moreover, a significant difference in the wake pattern at different values of S is observed. The trailing wake is displaced downward relative to the free stream for S less than 0.5, and displaced upward for S larger than 0.5.
KW - Asymmetric sinusoidal motion
KW - Navier-stokes simulations
KW - Plunging airfoil
KW - Propulsion
KW - Unsteady aerodynamics
UR - https://www.scopus.com/pages/publications/84880485567
U2 - 10.4028/www.scientific.net/AMR.712-715.1410
DO - 10.4028/www.scientific.net/AMR.712-715.1410
M3 - 会议稿件
AN - SCOPUS:84880485567
SN - 9783037857243
T3 - Advanced Materials Research
SP - 1410
EP - 1413
BT - Advances in Manufacturing Science and Engineering
T2 - 4th International Conference on Manufacturing Science and Engineering, ICMSE 2013
Y2 - 30 March 2013 through 31 March 2013
ER -