A High-Resolution Numerical Method for a Two-Phase Model of Deflagration-to-Detonation Transition

2000 ◽  
Vol 163 (2) ◽  
pp. 376-433 ◽  
Author(s):  
Keith A. Gonthier ◽  
Joseph M. Powers
Keyword(s):  
High Resolution ◽  
Numerical Method ◽  
Phase Model ◽  
Two Phase ◽  
Deflagration To Detonation Transition ◽  
Detonation Transition

Experimental investigation on multi-cycle two-phase spiral pulse detonation tube of two configurations

2018 ◽  
Vol 233 (11) ◽  
pp. 4166-4175
Author(s):  
Hua Qiu ◽  
Zheng Su ◽  
Cha Xiong
Keyword(s):  
Pressure Waves ◽  
Propagation Characteristics ◽  
Transient Pressure ◽  
Two Phase ◽  
Pulse Detonation ◽  
Compression Waves ◽  
Detonation Tube ◽  
Deflagration To Detonation Transition ◽  
Pulsed Detonation ◽  
Detonation Transition

The spiral tube structure is an effective method to shorten the axial length of the pulse detonation chamber. In this article, spiral pulsed detonation tube with two kinds of spiral configuration was experimentally investigated. Liquid gasoline and air were used as fuel and oxidant, respectively, and equivalence ratios were controlled to about 1.0. Based on the transient pressure along the tube, the propagation characteristics of the pressure waves in the multi-cycle spiral pulsed detonation tubes, such as pressure peaks, wave velocities and propagation process, were analyzed. Results showed that propagation of double compression waves was the common feature during the process of deflagration to detonation transition in the presented spiral tubes, and the onset of detonation was initiated by a local explosion in the second compression wave. The deflagration to detonation transition characteristics with detonation initiation and combustion characteristics without initiation in the spiral sections were both related to the dimensionless distance. Propagation characteristics of the pressure waves were influenced by the use of different spiral configuration. And some interesting phenomena were also found.

High-Resolution Finite Volume Central Schemes for a Compressible Two-Phase Model

2012 ◽  
Vol 34 (6) ◽  
pp. B861-B880 ◽  
Author(s):  
Giuseppe La Spina ◽  
Mattia de' Michieli Vitturi
Keyword(s):  
High Resolution ◽  
Finite Volume ◽  
Phase Model ◽  
Two Phase ◽  
Central Schemes

Two-phase modeling of deflagration-to-detonation transition in granular materials: Reduced equations

2001 ◽  
Vol 13 (10) ◽  
pp. 3002-3024 ◽  
Author(s):  
A. K. Kapila ◽  
R. Menikoff ◽  
J. B. Bdzil ◽  
S. F. Son ◽  
D. S. Stewart
Keyword(s):  
Granular Materials ◽  
Two Phase ◽  
Reduced Equations ◽  
Deflagration To Detonation Transition ◽  
Detonation Transition

Two-phase model for human classical conditioning.

1968 ◽  
Vol 78 (3, Pt.1) ◽  
pp. 359-368 ◽  
Author(s):  
William F. Prokasy ◽  
Martha A. Harsanyi
Keyword(s):  
Classical Conditioning ◽  
Phase Model ◽  
Two Phase
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