2024-03-28T19:05:58Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:02001613
2023-01-16T05:06:18Z
320:321:322
Losing the shock wave front profile due to interaction with turbulence
Fukushima, Gaku
Wei, Jiaxi
Ogawa, Shingo
Hagiwara, Jun
Nakamura, Yusuke
Sasoh, Akihiro
In this study, losing the shock wave profiles under interactions with grid turbulence was investigated experimentally and theoretically. We demonstrated that the shock wave contrast on side-view schlieren images gradually decreased to an undetectable level in the experiment. This shock wave 'vanishment' occurred at a low shock Mach number with a high turbulent Mach number. With a relatively strong shock wave, the contrast of the shock wave remained detectable although the shock wave profile region was expanded. To understand the shock wave vanishment phenomenon during interaction with turbulence, we established a shock wave vanishment model based on the solution of a one-dimensional interaction between a shock wave and forward induced flow. The criterion of the occurrence of local vanishment of the shock wave was derived as Mt ≥ (Ms^2 - 1) / Ms, where Mt is the turbulent Mach number and Ms is the shock Mach number. The proposed shock vanishment model involves the effect of the interaction length and the shock wave recovery characteristics. The derived model explains the vanishment of weak shock wave profile during turbulence with an interaction length of ten times the order of the integral scale of the turbulence, as observed in the experiment.
journal article
IOP publishing
2021-04-14
application/pdf
Fluid Dynamics Research
2
53
025504
0169-5983
https://nagoya.repo.nii.ac.jp/record/2001613/files/FDR_fukushima_2021.pdf
eng
https://doi.org/10.1088/1873-7005/abeda4
This is the Accepted Manuscript version of an article accepted for publication in [Fluid Dynamics Research]. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at [https://doi.org/10.1088/1873-7005/abeda4]
“This Accepted Manuscript is available for reuse under a CC BY-NC-ND licence after the 12 month embargo period provided that all the terms of the licence are adhered to”