Unsteady actuation of counter-flowing wall jets for gust load attenuation
Unsteady actuation of counter-flowing wall jets for gust load attenuation
复制标题
用于衰减阵风载荷的逆流壁射流的不稳定驱动
DOI:
10.1016/j.ast.2019.03.053
复制
发表时间:
2019
影响因子:
5.6
通讯作者:
Al-Battal N
中科院分区:
文献类型:
--
作者:
Al-Battal N
Counter-flowing wall jets actuated on the upper surface of an airfoil are investigated for the purpose of controlling gust encounters. For periodic and transient actuations, phase-averaged lift force and particle image velocimetry measurements are presented for a NACA 0012 airfoil, at a Reynolds number of 660,000, for a range of reduced frequencies and three jet locations, x J/c= 0.08, 0.60 and 0.95. For periodic actuation, amplitude of lift oscillations decrease and phase delay increase with increasing reduced frequency. The effect of reduced frequency on the amplitude and phase is more significant for blowing locations near the leading-edge and with increasing angle of attack. Transient actuation reveals the slow response of the separated flow, and therefore lift, with the delay becoming more pronounced for blowing near the leading-edge. Estimated time constants are similar to previous observations for forced separation and reattachment.
登录
查看更多内容
影响因子:
3.7
作者:
A. Darabi;I. Wygnanski
通讯作者:
I. Wygnanski
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
Daniel Heathcote;I. Gursul;D. Cleaver
通讯作者:
D. Cleaver
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
Stephanus Widjanarko;I.J.A.K. Geesing;D. Vries;H. Hoeijmakers;I. Grant
通讯作者:
I. Grant
影响因子:
2.2
作者:
Daniel Heathcote;I. Gursul;D. Cleaver
通讯作者:
D. Cleaver
影响因子:
3.7
作者:
A. Darabi;I. Wygnanski
通讯作者:
I. Wygnanski