Numerical Studies of Multi-cycle Acetylene-air Detonation Induced by Shock Focusing

Zhihong Zhang; Zhiqiang Li; Gan Dong

doi:10.1016/j.proeng.2014.12.542

Numerical Studies of Multi-cycle Acetylene-air Detonation Induced by Shock Focusing

Zhihong Zhang^*
, Zhiqiang Li
, Gan Dong

^*Corresponding author for this work

School of Energy and Power Engineering

Beihang University

Research output: Contribution to journal › Conference article › peer-review

8 Scopus citations

Abstract

Shock focusing techniques can avoid deflagration-to-detonation transition (DDT), which make PDE more efficiency. Numerical simulations of an idealized pulse detonation engine consisting of axial inlet and circumferential inlet are presented in this paper. Using detailed acetylene-air chemical kinetic model, investigation on detonation direct initiation by shock focusing is done. Studies indicate that in static flow field, the regions of high temperature and pressure created by shock focusing can produce detonation at the condition of circumferential inlet Mach 2.4. But in dynamic flow field, Mach number should increase to 3.5 to achieve detonation.

Original language	English
Pages (from-to)	327-331
Number of pages	5
Journal	Procedia Engineering
Volume	99
DOIs	https://doi.org/10.1016/j.proeng.2014.12.542
State	Published - 2015
Event	Asia-Pacific International Symposium on Aerospace Technology, APISAT 2014 - Shanghai, China Duration: 24 Sep 2014 → 26 Sep 2014

Keywords

Multi-cycle detonation
Numerical simulation
Shock focusing

Access to Document

10.1016/j.proeng.2014.12.542

Cite this

@article{17027e30e08b4a8ab273a765e84547d3,

title = "Numerical Studies of Multi-cycle Acetylene-air Detonation Induced by Shock Focusing",

abstract = "Shock focusing techniques can avoid deflagration-to-detonation transition (DDT), which make PDE more efficiency. Numerical simulations of an idealized pulse detonation engine consisting of axial inlet and circumferential inlet are presented in this paper. Using detailed acetylene-air chemical kinetic model, investigation on detonation direct initiation by shock focusing is done. Studies indicate that in static flow field, the regions of high temperature and pressure created by shock focusing can produce detonation at the condition of circumferential inlet Mach 2.4. But in dynamic flow field, Mach number should increase to 3.5 to achieve detonation.",

keywords = "Multi-cycle detonation, Numerical simulation, Shock focusing",

author = "Zhihong Zhang and Zhiqiang Li and Gan Dong",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors.; Asia-Pacific International Symposium on Aerospace Technology, APISAT 2014 ; Conference date: 24-09-2014 Through 26-09-2014",

year = "2015",

doi = "10.1016/j.proeng.2014.12.542",

language = "英语",

volume = "99",

pages = "327--331",

journal = "Procedia Engineering",

issn = "1877-7058",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Numerical Studies of Multi-cycle Acetylene-air Detonation Induced by Shock Focusing

AU - Zhang, Zhihong

AU - Li, Zhiqiang

AU - Dong, Gan

PY - 2015

Y1 - 2015

N2 - Shock focusing techniques can avoid deflagration-to-detonation transition (DDT), which make PDE more efficiency. Numerical simulations of an idealized pulse detonation engine consisting of axial inlet and circumferential inlet are presented in this paper. Using detailed acetylene-air chemical kinetic model, investigation on detonation direct initiation by shock focusing is done. Studies indicate that in static flow field, the regions of high temperature and pressure created by shock focusing can produce detonation at the condition of circumferential inlet Mach 2.4. But in dynamic flow field, Mach number should increase to 3.5 to achieve detonation.

AB - Shock focusing techniques can avoid deflagration-to-detonation transition (DDT), which make PDE more efficiency. Numerical simulations of an idealized pulse detonation engine consisting of axial inlet and circumferential inlet are presented in this paper. Using detailed acetylene-air chemical kinetic model, investigation on detonation direct initiation by shock focusing is done. Studies indicate that in static flow field, the regions of high temperature and pressure created by shock focusing can produce detonation at the condition of circumferential inlet Mach 2.4. But in dynamic flow field, Mach number should increase to 3.5 to achieve detonation.

KW - Multi-cycle detonation

KW - Numerical simulation

KW - Shock focusing

UR - https://www.scopus.com/pages/publications/84978141633

U2 - 10.1016/j.proeng.2014.12.542

DO - 10.1016/j.proeng.2014.12.542

M3 - 会议文章

AN - SCOPUS:84978141633

SN - 1877-7058

VL - 99

SP - 327

EP - 331

JO - Procedia Engineering

JF - Procedia Engineering

T2 - Asia-Pacific International Symposium on Aerospace Technology, APISAT 2014

Y2 - 24 September 2014 through 26 September 2014

ER -

Numerical Studies of Multi-cycle Acetylene-air Detonation Induced by Shock Focusing

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this