离子风空气加速器流场特性的实验平台设计及研究

Design and research of experimental platform on ionic wind air accelerator for measuring fluid field characteristic

针对离子风空气加速器内部的复杂流场特点,将离子风技术应用于气流加速方面。开展了离子风技术研究,分析了离子风空气加速器的原理。通过对国内外粒子成像技术在离子风效应实验研究方面的分析,建立了粒子图像测速(PIV)技术与离子风空气加速器流场的关系,提出了针对离子风空气加速器流场特性的PIV实验装置平台搭建的实验设计思路,包括PIV测量装置、高压电源、放电电极与流体通道四部分。对实验平台进行了论证,在此基础上,对PIV实验平台搭建的目的和意义、PIV实验设计的重点和难点进行了研究分析;阐述了整个PIV试验流程,指出了PIV实验的测量误差和实验操作误差的来源。研究结果表明,基于离子风空气加速器流场特性的实验平台搭建具有合理性和严密性。

Aiming at the characteristic of the complex flow fluid of ionic wind air accelerator, ionic wind technology was put into the aspect of air flow accelerating. Research of ionic wind technology was investigated and principle of the ion wind air accelerator was analyzed. After the analysis of particle imaging technology having effect on experimental study of ionic wind effect at home and abroad, the relationship of partied image velocimetry （PIV） technology and the fluid field of the ion wind air accelerator was established. An experimental designed method based on PIV technology was presented to test the internal flow field of ionic wind air accelerator. PIV measuring device, high voltage power supply, discharge electrode and fluid channel were designed. The PIV experimental platform was demonstrated. The purpose and meaning of the PIV experimental platform, the key and difficult point for PIV technology in ion wind air accelerator were analyzed. The controlling of tracing particle distribution, which is the key to the success of PIV experiment, was evaluated. The process of PIV experiment was demonstrated; the resources of errors from PIV experiment measurement and the experimental operations were shown. The results show that the design and research of PIV experimental platform based on ionic wind air accelerator are reasonable and rigor.