Design of a high-lift experiment in water including active flow control
Design of a high-lift experiment in water including active flow control
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DOI：
10.1088/0964-1726/23/7/077004
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发表时间：
2014-07-01
影响因子：
4.1
通讯作者：
Wierach, P.
中科院分区：
文献类型：
--
作者：
Beutel, T.;Sattler, S.;Wierach, P.
本文介绍了一种主动流动控制实验装置的结构设计。实验的目的是研究使用非定常吹气的内部吹气柯恩达襟翼的效率增加。该系统使用量身定制的微机电（MEMS）压力传感器来确定迎面而来的流的状态和致动唇来调节内部吹气襟翼上的壁附近的流的质量流量和速度。传感器和执行器被集成到一个高度负载的系统中，非常紧凑。传感器连接到总线系统，该总线系统将数据馈送到实时控制系统。在120 V的相当低的电压下使用d（33）效应的压电致动器被集成到控制吹出槽高度的唇部中。该系统是专为闭环控制，有效地避免流动分离的柯恩达皮瓣。该装置设计用于水洞实验，以减少自由流速度和系统的控制频率的一个因素，在空气中相比，由10。本文概述了该系统的主要组成部分的功能和验证及其发展。
This paper describes the structural design of an active flow-control experiment. The aim of the experiment is to investigate the increase in efficiency of an internally blown Coanda flap using unsteady blowing. The system uses tailor-made microelectromechanical (MEMS) pressure sensors to determine the state of the oncoming flow and an actuated lip to regulate the mass flow and velocity of a stream near a wall over the internally blown flap. Sensors and actuators are integrated into a highly loaded system that is extremely compact. The sensors are connected to a bus system that feeds the data into a real-time control system. The piezoelectric actuators using the d(33) effect at a comparable low voltage of 120 V are integrated into a lip that controls the blowout slot height. The system is designed for closed-loop control that efficiently avoids flow separation on the Coanda flap. The setup is designed for water-tunnel experiments in order to reduce the free-stream velocity and the system's control frequency by a factor of 10 compared with that in air. This paper outlines the function and verification of the system's main components and their development.