Propagation characteristics of shock waves driven by gaseous detonation waves

S. Kato, S. Hashimoto, A. Uemichi, J. Kasahara, Akiko Matsuo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We experimentally investigated propagation characteristics of the shock wave driven by a gaseous detonation wave emerging from the open end of a cylindrical detonation tube. In the present study, we visualized the shock wave and exhaust flowfields using a shadowgraph optical system and we obtained peak overpressure in the tube axial direction and the continuous shape transformation of shock waves around the tube open end. We also obtained overpressure histories of the shock wave using piezo-pressure transducers within 201 m from the open end of the tube. We normalized and classified these results by four regions using non-dimensional pressure and distance which are independent of variety of mixture and tube diameter. In the vicinity of the open end of the tube, the shock wave is nearly planar and does not significantly attenuate, and the peak overpressure maintains approximately C-J pressure. Subsequently, the shock wave attenuates rapidly, transforming from quasi-spherical to spherical. Farther from the tube open end, the shock wave propagates with approximately sound characteristic so that the peak overpressure decreases proportional to 1/r. Eventually, the shock wave begins to attenuate more rapidly than ideal sound attenuation, which may be due to the viscous effect.

Original languageEnglish
Pages (from-to)479-489
Number of pages11
JournalShock Waves
Volume20
Issue number6
DOIs
Publication statusPublished - 2010 Dec

Fingerprint

detonation waves
Detonation
Shock waves
shock waves
tubes
propagation
overpressure
Acoustic waves
shadowgraph photography
acoustics
Pressure transducers
pressure sensors
detonation
Optical systems
emerging
attenuation
histories

Keywords

  • Detonation
  • Optical visualization
  • PDE
  • Shock wave
  • SPL

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physics and Astronomy(all)

Cite this

Propagation characteristics of shock waves driven by gaseous detonation waves. / Kato, S.; Hashimoto, S.; Uemichi, A.; Kasahara, J.; Matsuo, Akiko.

In: Shock Waves, Vol. 20, No. 6, 12.2010, p. 479-489.

Research output: Contribution to journalArticle

Kato, S. ; Hashimoto, S. ; Uemichi, A. ; Kasahara, J. ; Matsuo, Akiko. / Propagation characteristics of shock waves driven by gaseous detonation waves. In: Shock Waves. 2010 ; Vol. 20, No. 6. pp. 479-489.
@article{f102ea75cd20410eb2223d9925cf87a3,
title = "Propagation characteristics of shock waves driven by gaseous detonation waves",
abstract = "We experimentally investigated propagation characteristics of the shock wave driven by a gaseous detonation wave emerging from the open end of a cylindrical detonation tube. In the present study, we visualized the shock wave and exhaust flowfields using a shadowgraph optical system and we obtained peak overpressure in the tube axial direction and the continuous shape transformation of shock waves around the tube open end. We also obtained overpressure histories of the shock wave using piezo-pressure transducers within 201 m from the open end of the tube. We normalized and classified these results by four regions using non-dimensional pressure and distance which are independent of variety of mixture and tube diameter. In the vicinity of the open end of the tube, the shock wave is nearly planar and does not significantly attenuate, and the peak overpressure maintains approximately C-J pressure. Subsequently, the shock wave attenuates rapidly, transforming from quasi-spherical to spherical. Farther from the tube open end, the shock wave propagates with approximately sound characteristic so that the peak overpressure decreases proportional to 1/r. Eventually, the shock wave begins to attenuate more rapidly than ideal sound attenuation, which may be due to the viscous effect.",
keywords = "Detonation, Optical visualization, PDE, Shock wave, SPL",
author = "S. Kato and S. Hashimoto and A. Uemichi and J. Kasahara and Akiko Matsuo",
year = "2010",
month = "12",
doi = "10.1007/s00193-010-0279-6",
language = "English",
volume = "20",
pages = "479--489",
journal = "Shock Waves",
issn = "0938-1287",
publisher = "Springer New York",
number = "6",

}

TY - JOUR

T1 - Propagation characteristics of shock waves driven by gaseous detonation waves

AU - Kato, S.

AU - Hashimoto, S.

AU - Uemichi, A.

AU - Kasahara, J.

AU - Matsuo, Akiko

PY - 2010/12

Y1 - 2010/12

N2 - We experimentally investigated propagation characteristics of the shock wave driven by a gaseous detonation wave emerging from the open end of a cylindrical detonation tube. In the present study, we visualized the shock wave and exhaust flowfields using a shadowgraph optical system and we obtained peak overpressure in the tube axial direction and the continuous shape transformation of shock waves around the tube open end. We also obtained overpressure histories of the shock wave using piezo-pressure transducers within 201 m from the open end of the tube. We normalized and classified these results by four regions using non-dimensional pressure and distance which are independent of variety of mixture and tube diameter. In the vicinity of the open end of the tube, the shock wave is nearly planar and does not significantly attenuate, and the peak overpressure maintains approximately C-J pressure. Subsequently, the shock wave attenuates rapidly, transforming from quasi-spherical to spherical. Farther from the tube open end, the shock wave propagates with approximately sound characteristic so that the peak overpressure decreases proportional to 1/r. Eventually, the shock wave begins to attenuate more rapidly than ideal sound attenuation, which may be due to the viscous effect.

AB - We experimentally investigated propagation characteristics of the shock wave driven by a gaseous detonation wave emerging from the open end of a cylindrical detonation tube. In the present study, we visualized the shock wave and exhaust flowfields using a shadowgraph optical system and we obtained peak overpressure in the tube axial direction and the continuous shape transformation of shock waves around the tube open end. We also obtained overpressure histories of the shock wave using piezo-pressure transducers within 201 m from the open end of the tube. We normalized and classified these results by four regions using non-dimensional pressure and distance which are independent of variety of mixture and tube diameter. In the vicinity of the open end of the tube, the shock wave is nearly planar and does not significantly attenuate, and the peak overpressure maintains approximately C-J pressure. Subsequently, the shock wave attenuates rapidly, transforming from quasi-spherical to spherical. Farther from the tube open end, the shock wave propagates with approximately sound characteristic so that the peak overpressure decreases proportional to 1/r. Eventually, the shock wave begins to attenuate more rapidly than ideal sound attenuation, which may be due to the viscous effect.

KW - Detonation

KW - Optical visualization

KW - PDE

KW - Shock wave

KW - SPL

UR - http://www.scopus.com/inward/record.url?scp=78649776011&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78649776011&partnerID=8YFLogxK

U2 - 10.1007/s00193-010-0279-6

DO - 10.1007/s00193-010-0279-6

M3 - Article

VL - 20

SP - 479

EP - 489

JO - Shock Waves

JF - Shock Waves

SN - 0938-1287

IS - 6

ER -