Theoretical and Natural Science

- The Open Access Proceedings Series for Conferences


Theoretical and Natural Science

Vol. 34, 02 April 2024


Open Access | Article

Research on the blockage effect in a shock tube

Dong Shao * 1
1 Zhejiang University

* Author to whom correspondence should be addressed.

Advances in Humanities Research, Vol. 34, 98-104
Published 02 April 2024. © 2023 The Author(s). Published by EWA Publishing
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Citation Dong Shao. Research on the blockage effect in a shock tube. TNS (2024) Vol. 34: 98-104. DOI: 10.54254/2753-8818/34/20241180.

Abstract

The shock tube is a crucial experimental apparatus in the field of explosive impact. Limited research has been conducted on the visualization of the internal flow field in shock tubes under blockage conditions, and there is a lack of comprehensive understanding of the mechanisms behind blockage effects. This paper presents experimental and numerical investigations into the propagation of shock waves inside a shock tube and their interaction with obstructive elements. Blockage effect experiments were conducted on a shock tube test platform, where pressure data were obtained through a pressure monitoring system. Additionally, schlieren imaging technology was employed to visualize the evolution of shock wave fronts. A two-dimensional numerical model of the shock tube was established using Fluent software, and the computed results exhibited excellent agreement with the experimental data, confirming the accuracy of the numerical model. The mechanism of the blockage effect was revealed through analysis of pressure-time curves and images depicting the evolution of shock wave fronts. Furthermore, adjustments to parameters on the validated numerical model allowed for analysis and comparison of different blockage ratios. The results indicate that the disturbance to the flow field caused by the blockage effect is primarily due to the reflection of shock waves between the front surface of the obstructive element and the shock tube wall. This reflection leads to differences in pressure curves compared to free-field conditions, and such differences increase with higher blockage ratios.

Keywords

Shock Tube, Shock Wave, Blockage Effect, Visualization

References

1. Balan G S and Raj S A 2023 Int. J. Impact Eng. 172 104406

2. Saathoff P J and Melbourne W H 1987 J. Wind. Eng. Ind. Aerod. 26 353-70.

3. Jiang Z, Takayama K, Babinsky H and Meguro T 1997 Shock Waves 7 151-62

4. Murugan T, De S, Dora C L, Das D and Kumar P 2013 Fluid Dyn. Res. 45 025506

5. Arun K R and Pathak V 2021 Def. Technol. 17 1840-51

6. Zhao X, Chen C, Shi C, Chen J, Chen Q and Zhao D 2021 J. Therm. Anal. Calorim. 143 3245-56

7. Li J and Hao H 2021 Process Saf. Environ. Prot. 145 94-109.

8. Yao Z, Ren H, Shen Z and Wang Z 2012 Prot. Eng. 34 18-23.

9. Bunjong D, Pussadee N and Wattanakasiwich P 2018 J. Phy.: Conf. Ser. 1144 012097

Data Availability

The datasets used and/or analyzed during the current study will be available from the authors upon reasonable request.

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Volume Title
Proceedings of the 3rd International Conference on Computing Innovation and Applied Physics
ISBN (Print)
978-1-83558-369-2
ISBN (Online)
978-1-83558-370-8
Published Date
02 April 2024
Series
Theoretical and Natural Science
ISSN (Print)
2753-8818
ISSN (Online)
2753-8826
DOI
10.54254/2753-8818/34/20241180
Copyright
© 2023 The Author(s)
Open Access
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Copyright © 2023 EWA Publishing. Unless Otherwise Stated