Theoretical analysis on deflagration-to-detonation transition

YF Liu, H Shen, DL Zhang, ZL Jiang - Chinese Physics B, 2018 - iopscience.iop.org
Numerical simulations have been done extensively in … and numerical simulations that the
DDT process always occur when the velocity of deflagration reaches about 50% CJ detonation

An improved method for hydrogen deflagration to detonation transition prediction under severe accidents in nuclear power plants

X Zhang, J Yu, T Huang, G Jiang, X Zhong… - International Journal of …, 2019 - Elsevier
… concentrations in deflagration to detonation transition criterion. The … Close agreements
between numerical simulations and a … to predict deflagration to detonation transition for various …

Flame acceleration and deflagration-to-detonation transition in hydrogen-air mixture in a channel with an array of obstacles of different shapes

H Xiao, ES Oran - Combustion and Flame, 2020 - Elsevier
… The objective of the present study is to use numerical simulations to examine the effect of
obstacle shape on flame acceleration and DDT through an array of obstacles in a channel. …

Three-dimensional simulations of detonation propagation in circular tubes: Effects of jet initiation and wall reflection

W Chen, J Liang, X Cai, Y Mahmoudi - Physics of Fluids, 2020 - pubs.aip.org
… His results are in perfect agreement with other numerical results and experiments. Cai
has conducted a series of numerical simulations on detonation initiation and propagation in …

Effect of ethylene fuel/air equivalence ratio on the dynamics of deflagration-to-detonation transition and detonation propagation process

VB Nguyen, JM Li, PH Chang, CJ Teo… - Combustion Science …, 2018 - Taylor & Francis
… Thus, in this study, numerical simulations are performed for … -to-detonation transition (DDT)
and detonation processes. In … , and Chapman–Jouguet detonation velocity are comparable …

Detonation simulations in expanding channel with supersonic combustible mixture

W Chen, J Liang, X Cai, Z Lin - International Journal of Hydrogen Energy, 2017 - Elsevier
… 1, numerical simulations of detonation initiation in the supersonic combustible mixture with
a hot jet are conducted in an expanding channel together with a rectangular part. In Fig. 1, X1 …

[PDF][PDF] Numerical Study on Effects of Obstacle Shape on Detonation Transition Mechanism

A Ago, T Niibo, N Tsuboi, AK Hayashi - International Colloquium on the …, 2017 - icders.org
… In recent years, numerical simulations on DDT are performed in small channel with repeated
obstacle. Gamezo et al. [4] simulates DDT for using one-step Arrhenius kinetics model. …

Numerical Study of Deflagration to Detonation Transition Using Obstacle Combinations in OpenFOAM

V Bassi, U Vohra, R Singh… - 2020 IEEE Aerospace …, 2020 - ieeexplore.ieee.org
… 2D numerical simulations are performed and compared. Deflagration to detonation transition
… time plots are plotted and it has been observed that DDT transition occurred in all the cases …

Effects of disturbance on detonation initiation in mixture

Y Wang, W Han, R Deiterding, Z Chen - Physical Review Fluids, 2018 - APS
detonation initiation with a nonuniform initiation zone. In this work, two-dimensional numerical
simulations … the effects of disturbance on detonation initiation in a stoichiometric H2/O2/N2 …

[HTML][HTML] Numerical simulations of cellular detonation diffraction in a stable gaseous mixture

J Li, J Ning, CB Kiyanda, HD Ng - Propulsion and Power Research, 2016 - Elsevier
… planar ZND detonation. In this study, a series of high resolution, numerical simulations using
… to investigate the evolution of the cellular detonation wave expanded from a small channel …