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Research Papers: Fluid-Structure Interaction

Experimental and Numerical Study of Pressure in a Shock Tube

[+] Author and Article Information
Hassan A. Khawaja

Department of Engineering and Safety,
Faculty of Natural Sciences and Technology,
UiT—The Arctic University of Norway,
Postboks 6050, Langnes,
Tromso 9037, Norway
e-mail: hassan.a.khawaja@uit.no

Ramzi Messahel

Laboratoire de Mecanique de
Lille UMR CNRS 8107,
Universite de Lille,
Lille 59650, France
e-mail: ramzi.messahel@ed.univ-lille1.fr

Bruce Ewan

Chemical and Biological Engineering,
University of Sheffield,
Western Bank,
Sheffield S10 2TN, UK
e-mail: b.c.ewan@sheffield.ac.uk

Souli Mhamed

Laboratoire de Mecanique
de Lille UMR CNRS 8107,
Universite de Lille,
Lille 59650, France
e-mail: mhamed.souli@univ-lille1.fr

Mojtaba Moatamedi

Faculty of Technology,
Narvik University College,
Lodve Langes Gate 2,
Postboks 385,
Narvik 8505, Norway
e-mail: moji@hin.no

1Corresponding author.

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received June 24, 2015; final manuscript received September 9, 2015; published online April 28, 2016. Assoc. Editor: Tomomichi Nakamura.

J. Pressure Vessel Technol 138(4), 041301 (Apr 28, 2016) (6 pages) Paper No: PVT-15-1132; doi: 10.1115/1.4031591 History: Received June 24, 2015; Revised September 09, 2015

This paper presents the behavior of pressure in an air–water shock tube. In this work, high-pressure air (at 100 bar) interacts with water (at 1 atm ∼ 1 bar) through an orifice in a 100 mm constant diameter tube. The experiments are repeated with three different orifice plate diameters of 4, 8, and 15 mm. The variation of pressure during the transient stage is recorded in these experiments and it is found that with increasing orifice diameter, the amplitude of the pressure increases linearly with time when all other conditions are unchanged. The same phenomenon is simulated using the ls-dyna® software using an arbitrary Lagrangian Eulerian (ALE) method to solve the problem numerically. Simulations are made with a range of orifice diameters. The experimental results confirm the validity of the simulations algorithm. The simulations also demonstrated that the pressure behaves linearly with orifice diameter only when orifice diameter is less than 15% of the tube diameter.

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References

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Figures

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Fig. 1

Shock-tube setup (figure not to scale)

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Fig. 2

Diaphragm (burst disk), before (left) and after (right) the burst

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Fig. 3

Pressure profiles at three pressure sensors (k1, k2, and k3) placed in the driven section of the shock tube for a 15 mm orifice diameter

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Fig. 4

Shock-tube model for a 15 mm orifice diameter (figure not to scale)

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Fig. 5

Zoomed-in view of the mesh at the interaction region for a 15 mm orifice diameter

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Fig. 6

Pressure in driven section versus orifice diameter

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Fig. 7

Comparison of ls-dyna® and experiment results at the (a) k1, (b) k2, and (c) k3 sensors for a 15 mm orifice diameter

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