【作者】 王克； 袁格；

【Author】 WANG Ke YUAN Ge(Beijing Institute of aerodynamics, Beijing 100074,China)

【机构】 北京空气动力研究所；

【摘要】 近十年以来,基于激光技术的速度场测量研究进展迅速。在原有技术如LDV不断成熟完善同时,粒子图像测速技术PIV的出现,使速度场的测量由单点扩展到全场、定常到非定常、二维到三维,而全场多普勒测速技术DGV出现,更使速度场的测量有望拓展到高速度量级。本文主要是介绍DGV技术的原理性实验,以期说明此项技术的特点并引发人们对此项技术的研究。更多还原

【Abstract】 The research on the measurement of velocity distribution based on laser techniques develops quickly in recent decade. With the former techniques such as LDA, gradually matured and perfect, the development of Particle Image Velocimetry(PIV) makes the velocity measurement ranging from single point to the whole field, steady field to unsteady, two dimension to 3-D. And there is another method, Doppler Global Velocimetry being developed that will allow the measure available in a higher speed level. This paper introduces the experiment of DGV in principle, to understand its properties and lead more people to investigate this technique.更多还原