Experimental investigation on response characteristics of PIV tracer particles in high speed flow

Wang Yanzhi; Chen Fang; Liu Hong; Sha Sha; Lu Xueling; Zhang Qingbing; Yue Lianjie

doi:10.11729/syltlx20170160

Volume 32 Issue 3

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Wang Yanzhi, Chen Fang, Liu Hong, et al. Experimental investigation on response characteristics of PIV tracer particles in high speed flow[J]. Journal of Experiments in Fluid Mechanics, 2018, 32(3): 94-99. doi: 10.11729/syltlx20170160

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Experimental investigation on response characteristics of PIV tracer particles in high speed flow

doi: 10.11729/syltlx20170160

1.
School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai 200240, China
2.
Beijing Institute of Electronic System Engineering, Beijing 100854, China
3.
Institute of Mechanics, Chinese Academy of Sciences, Beijing 100089, China

Received Date: 2017-12-13
Rev Recd Date: 2018-03-03
Publish Date: 2018-06-25

Abstract

Abstract

The tracer's tracking ability is the key factor affecting the measurement accuracy of high speed PIV. Particle relaxation modeling is presented for high speed flow with the normal mach number over 1.4. Based on the combination of theoretical analysis and numerical simulations, high speed PIV and the tracer particle seeding technology are developed, and the quantificational measurement ability of PIV is improved. Recent experimental results were obtained by the Multi-Mach number high-speed wind tunnel in Shanghai JiaoTong university where titanium dioxides of various sizes were used as tracers in the Mach 4 wind tunnel to induce a 22° shock wave. The results reveal that the 30nm titanium dioxide particle is the most qualified option. Meanwhile, various shock wave experiments (including oblique shock wave and detached shock wave) were carried out to validate the particle tracing ability. In this paper, multiple experimental results are put forward to support the selection of tracer particles of high speed PIV.
- supersonic wind tunnel,
- PIV experiment,
- tracers,
- particle tracing ability,
- theoretical verification

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References(18)

References

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