Design of a pulsed jet actuator for separation control
Design of a pulsed jet actuator for separation control
复制标题
用于分离控制的脉冲喷射执行器的设计
DOI：
10.1007/s13272-018-0328-x
复制
发表时间：
2018
影响因子：
--
通讯作者：
M. Bauer
中科院分区：
文献类型：
--
作者：
P. Schlösser;M. Bauer
研制了一种用于分离控制的脉冲喷流激励器，并将其应用于风洞实验，重点研究了挂架-机翼连接处后的分离。本文介绍了在挂架-机翼连接处成功演示气流控制的硬件设计和试验的最后几个步骤。执行器的概念基于射流技术，无需移动部件即可实现脉冲吹扫。通过对试验应用情况的数值模拟给出了设计参数，并在地面试验中进行了验证。这些地面试验的结果和风洞试验设置参数的推导。对地面试验结果的进一步评价得出了动量系数、供气质量流量和风洞速度之间的关系。结果表明，对于给定的风洞实验，等动量系数水平与等速度比水平近似一致。所提出的设计方案能够满足流动控制参数和模型几何形状的所有要求，为在大规模风洞试验中成功地演示流动控制铺平了道路。
A pulsed jet actuator for separation control has been developed for application in a real-scale wind tunnel experiment with focus on separation behind the pylon-wing junction. This paper covers the last steps of hardware design and testing on the way to a successful demonstration of flow control at the pylon-wing junction. The concept of the actuator is based on fluidic technology and applies pulsed blowing without the help of moving parts. Design parameters are given by numerical simulations of the experimental application case and are validated in ground test. Results of these ground tests are presented and parameters for wind tunnel test settings are derived. The further evaluation of ground test results yields a relation of momentum coefficient, supply mass flow and wind tunnel velocities. It is shown that for the given wind tunnel experiment levels of constant momentum coefficient approximately coincide with levels of constant velocity ratio. All requirements with respect to flow control parameters and model geometry can be satisfied with the presented design, paving the way for a successful demonstration of flow control in a large-scale wind tunnel test.