Volume 19, Issue 5 (May 2019)                   Modares Mechanical Engineering 2019, 19(5): 1265-1274 | Back to browse issues page

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1- Electronic Department, Information & Communication Technology Faculty, Imam Hossein University, Tehran, Iran
2- Manufacturing Department, Mechanics Faculty, K. N. Toosi University of Technology, Tehran, Iran
3- Manufacturing Department, Mechanics Faculty, K. N. Toosi University of Technology, Tehran, Iran , zamani@kntu.ac.ir
Abstract:   (2977 Views)
This paper investigates a kind of KNTU1 non-diaphragm shock tube equipped with an innovative design valve within a driven tube. The shock tube is capable of generating a flat shock wave in its driven tube with a length to diameter ratio of 41/6. The KNTU1 shock tube is -type and some limitations of this kind of shock tube such as the lack of without disassembling, the inability to adjust pressure ratio at a specified interval, and the inability to automate the shock tube caused a development on an automated shock tube. In this study, an innovative mechanism to achieve high-speed opening valve with an opening time of 8ms and 10ms is proposed. The unique feature of this automatic valve, compared with existing valves, is its opening from the center to the sides, such as the camera aperture. This is the best way to open the valve and smooth the wave and compensates for a part of the opening time of the valve. Also, the alignment of the driver and the drain prevents disturbances caused by the redirection or rotation of the gas seen in most valves. These help optimize the shock tube. Another initiative in this paper is the design and construction of an optical system to measure the speed and the moment of shock wave arrival to check the shape surface of the shock wave. This system has the ability to move in driven. This paper has been compiled to compare theoretical and experimental data of shock wave.
 
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Article Type: Original Research | Subject: Hydraulic and Pneumatic Systems
Received: 2018/07/9 | Accepted: 2018/12/19 | Published: 2019/02/11

References
1. Zamani J, Hosseinzadeh R. Manufacturing of closed-end gas driven shock tube. Aerospace Mechanics. 2017;14(2):27-42. [Persian] [Link]
2. Hanson RK, Davidson DF. Recent advances in laser absorption and shock tube methods for studies of combustion chemistry. Progress in Energy and Combustion Science. 2014;44:103-114. [Link] [DOI:10.1016/j.pecs.2014.05.001]
3. Tranter RS, Brezinsky K, Fulle D. Design of a high-pressure single pulse shock tube for chemical kinetic investigations. Review of Scientific Instruments. 2001;72(7):3046-3054. [Link] [DOI:10.1063/1.1379963]
4. Udagawa Sh, Ota M, Maeno K. Development of a small diameter shock tube and measurement of basic characteristics. Transactions of the Japan Society of Mechanical Engineers Series B. 2012;78(785):36-48. [Link] [DOI:10.1299/kikaib.78.36]
5. Hariharan MS, Janardhanraj S, Saravanan S, Jagadeesh G. Diaphragmless shock wave generators for industrial applications of shock waves. Shock Waves. 2011;21(3):301-306. [Link] [DOI:10.1007/s00193-010-0296-5]
6. Saito T, Menezes V, Kuribayashi T, Sun M, Jagadeesh G, Takayama K. Unsteady convective surface heat flux measurements on cylinder for CFD code validation. Shock Waves. 2003;13(5):327-337. [Link] [DOI:10.1007/s00193-003-0223-0]
7. Tranter RS. Lynch PT. A miniature high repetition rate shock tube. Review of Scientific Instruments. 2013;84(9):094102. [] [DOI:10.1063/1.4820917]
8. Downey MS, Cloete TJ, Yates ADB. A rapid opening sleeve valve for a diaphragmless shock tube. Shock Waves. 2011;21(4):315-319. [Link] [DOI:10.1007/s00193-011-0310-6]
9. Heufer KA, Olivier H, Drumm S, Murrenhoff H. A new fast acting valve for diaphragmless shock tubes. In: Kontis K, editor. 28th international symposium on shock waves 1. 1st Volume. Heidelberg: Springer; 2012. pp. 535-540. [Link] [DOI:10.1007/978-3-642-25688-2_82]
10. Sivaraman I. Introduction to hydraulics and pneumatics. 3rd Edition. Delhi: PHI Learning Private Limited; 2017. [Link]
11. Oliver MR, Spooncer RC, Ghezelayagh MH. An autoreferenced two-state optical fibre reflective sensor. Proceeding of Fibre Optics '86, 1986, London, United Kingdom. Bellingham: SPIE; 1986. [Link]

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