Optics and Precision Engineering, Volume. 32, Issue 15, 2355(2024)
Image measurement of shock wave flow field at outlet of large diameter explosion shock tube
To capture schlieren images of explosion shock waves over a large field of view and analyze the flow field evolution after shock wave interaction with a model, a reflective high-speed schlieren measurement technique based on focused schlieren was developed. The system uses a laser source and high reflective film for input. By simplifying the knife-edge grid design, the shock wave flow field evolution at the outlet of a long-distance, large-aperture explosion shock tube and its high-resolution interaction with a solid model are achieved. At a distance of over 80 m, shock wave characteristics were obtained from a large-caliber, high-yield explosion shock tube with a 6 m×3 m field of view, along with high temporal and spatial resolution images and state data regarding interactions with solids. The study shows that the designed focused schlieren system is simpler, more feasible, and offers a longer test distance and wider field of view than traditional systems. By altering the light source input, the benefits of a laser source for long-distance imaging are explored. The interaction between the shock wave front and the solid model reveals the formation, evolution, and flow state of the shock wave on the model. These measurements provide visual data to support the evaluation and response analysis of weapons and equipment subjected to shock waves.
Get Citation
Copy Citation Text
Xing ZHENG, Haiying HUANG, Yongjian MAO, Jun ZHANG, Dong ZHOU. Image measurement of shock wave flow field at outlet of large diameter explosion shock tube[J]. Optics and Precision Engineering, 2024, 32(15): 2355
Category:
Received: Apr. 7, 2024
Accepted: --
Published Online: Sep. 27, 2024
The Author Email: HUANG Haiying (hhy-1516@163.com)