Cellular structures of planar detonations with a detailed chemical reaction model

K. Inaba, Akiko Matsuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Two-dimensional computations of unsteady gaseous detonations have been performed using a detailed chemical reaction model. Five cases are simulated to reveal the structure and propagation of stoichiometric hydrogen-air or hydrogen-oxygen-argon detonations: 2H2+ O2+ 3.76N2/3.76Ar at the initial pressures of 1.00, 0.421, and 0.132 atm. We examine the effects of channel width, initial pressure, and dilution and compare the results to the previous experimental data. Transverse wave strength determined by pressure ratio across the reflect shock is utilized for the evaluation of the transverse wave. With increasing the channel width, the transverse wave structure varies from the double Mach configuration to the complex double Mach configuration, and the transverse wave strength also increases. In hydrogen-air mixture at the initial pressure 1.00 and 0.421 atm, the strong transverse detonation, whose transverse wave strength is 1.5, propagates through the unreacted combustible mixture behind the incident shock. Our results indicate that an onset of the strong transverse detonation highly relates to the oscillation of the shock front and has a close relation to the second explosion limit of the gas mixture.

Original languageEnglish
Title of host publication39th Aerospace Sciences Meeting and Exhibit
Publication statusPublished - 2001
Event39th Aerospace Sciences Meeting and Exhibit 2001 - Reno, NV, United States
Duration: 2001 Jan 82001 Jan 11

Other

Other39th Aerospace Sciences Meeting and Exhibit 2001
CountryUnited States
CityReno, NV
Period01/1/801/1/11

Fingerprint

transverse waves
Detonation
detonation
chemical reaction
Chemical reactions
chemical reactions
hydrogen
Hydrogen
Mach number
shock
pressure ratio
air
shock fronts
argon
Air
configurations
Gas mixtures
Dilution
Explosions
gas mixtures

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

Cite this

Inaba, K., & Matsuo, A. (2001). Cellular structures of planar detonations with a detailed chemical reaction model. In 39th Aerospace Sciences Meeting and Exhibit

Cellular structures of planar detonations with a detailed chemical reaction model. / Inaba, K.; Matsuo, Akiko.

39th Aerospace Sciences Meeting and Exhibit. 2001.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Inaba, K & Matsuo, A 2001, Cellular structures of planar detonations with a detailed chemical reaction model. in 39th Aerospace Sciences Meeting and Exhibit. 39th Aerospace Sciences Meeting and Exhibit 2001, Reno, NV, United States, 01/1/8.
Inaba K, Matsuo A. Cellular structures of planar detonations with a detailed chemical reaction model. In 39th Aerospace Sciences Meeting and Exhibit. 2001
Inaba, K. ; Matsuo, Akiko. / Cellular structures of planar detonations with a detailed chemical reaction model. 39th Aerospace Sciences Meeting and Exhibit. 2001.
@inproceedings{cd12f0b00da54e14aa8b0f591d8af0ef,
title = "Cellular structures of planar detonations with a detailed chemical reaction model",
abstract = "Two-dimensional computations of unsteady gaseous detonations have been performed using a detailed chemical reaction model. Five cases are simulated to reveal the structure and propagation of stoichiometric hydrogen-air or hydrogen-oxygen-argon detonations: 2H2+ O2+ 3.76N2/3.76Ar at the initial pressures of 1.00, 0.421, and 0.132 atm. We examine the effects of channel width, initial pressure, and dilution and compare the results to the previous experimental data. Transverse wave strength determined by pressure ratio across the reflect shock is utilized for the evaluation of the transverse wave. With increasing the channel width, the transverse wave structure varies from the double Mach configuration to the complex double Mach configuration, and the transverse wave strength also increases. In hydrogen-air mixture at the initial pressure 1.00 and 0.421 atm, the strong transverse detonation, whose transverse wave strength is 1.5, propagates through the unreacted combustible mixture behind the incident shock. Our results indicate that an onset of the strong transverse detonation highly relates to the oscillation of the shock front and has a close relation to the second explosion limit of the gas mixture.",
author = "K. Inaba and Akiko Matsuo",
year = "2001",
language = "English",
booktitle = "39th Aerospace Sciences Meeting and Exhibit",

}

TY - GEN

T1 - Cellular structures of planar detonations with a detailed chemical reaction model

AU - Inaba, K.

AU - Matsuo, Akiko

PY - 2001

Y1 - 2001

N2 - Two-dimensional computations of unsteady gaseous detonations have been performed using a detailed chemical reaction model. Five cases are simulated to reveal the structure and propagation of stoichiometric hydrogen-air or hydrogen-oxygen-argon detonations: 2H2+ O2+ 3.76N2/3.76Ar at the initial pressures of 1.00, 0.421, and 0.132 atm. We examine the effects of channel width, initial pressure, and dilution and compare the results to the previous experimental data. Transverse wave strength determined by pressure ratio across the reflect shock is utilized for the evaluation of the transverse wave. With increasing the channel width, the transverse wave structure varies from the double Mach configuration to the complex double Mach configuration, and the transverse wave strength also increases. In hydrogen-air mixture at the initial pressure 1.00 and 0.421 atm, the strong transverse detonation, whose transverse wave strength is 1.5, propagates through the unreacted combustible mixture behind the incident shock. Our results indicate that an onset of the strong transverse detonation highly relates to the oscillation of the shock front and has a close relation to the second explosion limit of the gas mixture.

AB - Two-dimensional computations of unsteady gaseous detonations have been performed using a detailed chemical reaction model. Five cases are simulated to reveal the structure and propagation of stoichiometric hydrogen-air or hydrogen-oxygen-argon detonations: 2H2+ O2+ 3.76N2/3.76Ar at the initial pressures of 1.00, 0.421, and 0.132 atm. We examine the effects of channel width, initial pressure, and dilution and compare the results to the previous experimental data. Transverse wave strength determined by pressure ratio across the reflect shock is utilized for the evaluation of the transverse wave. With increasing the channel width, the transverse wave structure varies from the double Mach configuration to the complex double Mach configuration, and the transverse wave strength also increases. In hydrogen-air mixture at the initial pressure 1.00 and 0.421 atm, the strong transverse detonation, whose transverse wave strength is 1.5, propagates through the unreacted combustible mixture behind the incident shock. Our results indicate that an onset of the strong transverse detonation highly relates to the oscillation of the shock front and has a close relation to the second explosion limit of the gas mixture.

UR - http://www.scopus.com/inward/record.url?scp=84897837488&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84897837488&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84897837488

BT - 39th Aerospace Sciences Meeting and Exhibit

ER -