摘要
设计了基于智能芯片控制的电磁驱动模式的复合射流激励器,并设计和制造了简易的试验装置。通过高速摄像技术,运用可视化方法研究复合射流激励器在不同频率下产生的涡环的结构特征及其传播过程中速度的变化特性,分析了电磁铁工作时不同的占空比对涡环传播速度的影响。研究表明随着涡环传播过程的推进,涡环的速度先逐渐上升,后逐渐下降,直至涡环能量全部耗散;随着频率的增大,涡环传播平均速度逐渐减小;同一频率下,占空比越大,涡环传播平均速度越大。
The design of synthetic jet actuators which were based on electromagnetic drive mode under the control of smart chip were studied.A simple test device was designed and manufactured.By using high-speed video techniques and visualization method,vortex ring structure characteristic and change of propagation velocity in the process of communication when synthetic jet actuators were working at different frequencies were studied.Finally,the effect on the propagation velocity of vortex rings when the solenoid worked at different duty ratios was analyzed.Research had shown that with the propagation of the vortex ring,vortex ring velocity increased gradually first,then decreased gradually,until all energy of vortex ring dissipated.With the increase of frequency,the average propagation velocity of the vortex ring decreased.At the same frequency,the larger the duty ratio,the greater the mean velocity of the vortex ring.
出处
《能源工程》
2017年第2期8-13,共6页
Energy Engineering
基金
国家高技术研究发展计划(863计划)(2007AA05Z211)
上海市科委建设项目(13DZ2260900)
关键词
涡环
复合射流
复合射流激励器
占空比
vortex rings
synthetic jet
synthetic jet actuators
duty ratio
