| A Study of the Impulse Wave Discharged from the Exits of Two Parallel Tubes |
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| 引用本文： | Yong-Hun Kweon,Heuy-Dong Kim,Toshiaki Setoguchi,Toshiyuki Aoki. A Study of the Impulse Wave Discharged from the Exits of Two Parallel Tubes[J]. 热科学学报(英文版), 2003, 12(4): 332-336. DOI: 10.1007/s11630-003-0040-x |
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| 作者姓名： | Yong-Hun Kweon Heuy-Dong Kim Toshiaki Setoguchi Toshiyuki Aoki |
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| 作者单位： | School of Mechanical Engineering，Andong National University，Andong 760-749，Korea，School of Mechanical Engineering，Andong National University，Andong 760-749，Korea，Department of Mechanical Engineering，Saga University，Honjo，Saga 840-8502，Japan，Department of Energy Science and Engineering，Kyushu University，Kasuga，Fukuoka 816-8580，Japan |
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| 摘 要： | The twin impulse wave leads to very complicated flow fields, such as Mach stem, spherical waves, and vortex ring. The twin impulse wave discharged from the exits of the two tubes placed in parallel is investigated to understand the detailed flow physics associated with the twin impulse wave, compared with those in a single impulse wave. In the current study, the merging phenomena and propagation characteristics of the impulse waves are investigated using a shock tube experiment and by numerical computations. The Harten-Yee's total variation diminishing (TVD) scheme is used to solve the unsteady two-dimensional compressible Euler equations. The Mach number Ms of incident shock wave is changed below 1.5 and the distance between two-parallel tubes, L/d, is changed from 1.2 to 4.0. In the shock tube experiment, the twin impulse waves are visualized by a Schlieren optical system for the purpose of validation of computational work. The results obtained show that on the symmetric axis between two-parallel tube
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| 关 键 词： | 冲击波 非稳态流 振动波 振动管 可压缩性流 球形波 环形涡流 |
| 收稿时间： | 2008-04-22 |
A study of the impulse wave discharged from the exits of two parallel tubes |
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| Yong-Hun Kweon,Heuy-Dong Kim,Toshiaki Setoguchi,Toshiyuki Aoki. A study of the impulse wave discharged from the exits of two parallel tubes[J]. Journal of Thermal Science, 2003, 12(4): 332-336. DOI: 10.1007/s11630-003-0040-x |
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| Authors: | Yong-Hun Kweon Heuy-Dong Kim Toshiaki Setoguchi Toshiyuki Aoki |
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| Affiliation: | (1) School of Mechanical Engineering, Andong National University, 760-749 Andong, Korea;(2) Department of Mechanical Engineering, Saga University, 840-8502 Honjo, Saga, Japan;(3) Department of Energy Science and Engineering, Kyushu University, 816-8580 Kasuga, Fukuoka, Japan |
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| Abstract: | The twin impulse wave leads to very complicated flow fields, such as Mach stem, spherical waves, and vortex ring. The twin impulse wave discharged from the exits of the two tubes placed in parallel is investigated to understand the detailed flow physics associated with the twin impulse wave, compared with those in a single impulse wave. In the current study, the merging phenomena and propagation characteristics of the impulse waves are investigated using a shock tube experiment and by numerical computations. The Harten-Yee's total variation diminishing (TVD) scheme is used to solve the unsteady two-dimensional compressible Euler equations. The Mach number Ms of incident shock wave is changed below 1.5 and the distance between two-parallel tubes, L/d, is changed from 1.2 to 4.0. In the shock tube experiment, the twin impulse waves are visualized by a Schlieren optical system for the purpose of validation of computational work. The results obtained show that on the symmetric axis between two-parallel tubes, the peak pressure produced by the twin impulse waves and its location strongly depend upon the distance between two-parallel tubes, L/d and the incident shock Mach number, Ms. The predicted Schlieren images represent the measured twin-impulse wave with a good accuracy. |
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| Keywords: | compressible flow unsteady flow impulse wave shock wave shock tube. |
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