摘要
介绍了采用数字式互相关粒子图像测速系统 (DPIV)在测量超音速喷流实验中的应用 ;实验给出了设计马赫数Ma =1 .5的小型拉瓦尔喷管在不同总压和反压比条件下 ,喷流速度场、流线、涡量分布等定量信息 .实验结果显示出流场中激波前后流体速度 ,涡量分布的明显变化 。
Experimental study of supersonic jet flow using digital PIV system with frame straddle CCED camera is introduced in the paper. The diameter and Mach number of the Laval nozzle exit are 13.8 mm and 1.5 respectively, the vector field and wave patterns of the jet flow in different pressure ratio of the stagnation pressure with the surrounding static pressure were observed. The results show the different of flow speed and other parameter of flow field before and after the shock wave. The generation of particles and seeding method are also simply described in the paper.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2001年第6期666-669,共4页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金资助项目 (CNSF1939310 0 0 1 0 3)
