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2018 | OriginalPaper | Chapter

Forecasting Method of Shock-Standoff Distance for Forward-Facing Cavity

Authors : Wang Gang, MA Xiao-wei, Jiang Tao, Gong Hong-ming, KONG Rong-zong, YANG Yan-guang

Published in: Shock Wave Interactions

Publisher: Springer International Publishing

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Abstract

Experiments are performed on a cylinder with a forward-facing cavity at the tip in the flow of \( M_{\infty } = 10 \) in FD-14A shock tunnel. The shock shape, shock-standoff distance, and oscillation characteristics are captured by the high-speed movie, and the dynamic pressure response is used to correlate with the acoustic characteristics of the cavity base through the transducer. By analyzing the amount of experimental and numerical results abroad, a forecasting method for shock-standoff distance is proposed. Combination of organ-pipe theory with experimental results of oscillation frequency validates the applicability and effectiveness of the method. Results of shock-standoff distance and oscillation frequency are also obtained for experiments in FD-14A shock tunnel. The forecasting results of oscillation frequency are in accordance with the experimental results. Furthermore, the oscillation amplitude and average velocity of the shock wave are analyzed for forward-facing nose cavity at \( M_{\infty } = 10 \).

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Metadata
Title
Forecasting Method of Shock-Standoff Distance for Forward-Facing Cavity
Authors
Wang Gang
MA Xiao-wei
Jiang Tao
Gong Hong-ming
KONG Rong-zong
YANG Yan-guang
Copyright Year
2018
DOI
https://doi.org/10.1007/978-3-319-73180-3_7

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