Document Type

Article

Publication Date

1-2012

Keywords

shock tube, shock wave, area contraction.

Abstract

This paper presents an experimental investigation into the effects of area contraction on shock wave strength and peak pressure in a shock tube. The shock tube is an important component of the short duration, high speed fluid flow test facility, available at the Universiti Tenaga Nasional (UNITEN), Malaysia. The area contraction was facilitated by positioning a bush adjacent to the primary diaphragm section, which separates the driver and driven sections. Experimental measurements were performed with and without the presence of the bush, at various diaphragm pressure ratios, which is the ratio of air pressure between the driver (high pressure) and driven (low pressure) sections. The instantaneous static pressure variations were measured at two locations close to the driven tube end wall, using high sensitivity pressure sensors, which allow the shock wave strength, shock wave speed and peak pressure to be analysed. The results reveal that the area contraction significantly reduces the shock wave strength, shock wave speed and peak pressure. At a diaphragm pressure ratio of 10, the shock wave strength decreases by 18%, the peak pressure decreases by 30% and the shock wave speed decreases by 8%.

Faculty

Faculty of Applied Science & Technology (FAST)

Journal

International Journal of Automotive and Mechanical Engineering (IJAME)

Volume

5

First Page

587

Last Page

596

Version

Publisher's version

Terms of Use

Terms of Use for Works posted in SOURCE.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Original Publication Citation

Mohsen, A. Yusoff, M. Z., Alfalahi, A. & Shuaib, N. H. (2012). The Effects of Area Contraction on Shock Wave Strength and Peak Pressure in Shock Tube. International Journal of Automotive and Mechanical Engineering. 5. 587-596. 10.15282/ijame.5.2012.5.004

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Engineering Commons

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