Numerical investigation of the mechanism behind the deflagration to detonation transition in homogeneous and inhomogeneous mixtures of H2-air in an obstructed …

MHS Saeid, J Khadem, S Emami - International Journal of Hydrogen …, 2021 - Elsevier
The accidental release of hydrogen into enclosures can result in a flammable mixture with
concentration gradients and possible deflagration-to-detonation transition (DDT). This …

Progress of research on the effect of non-uniform premixing on hydrogen and methane explosion characteristics

Z Xiu, Z Liu, P Li, M Li, Y Zhao, T Fan, J Yuan - Process Safety and …, 2023 - Elsevier
This study attempted to systematically understand the research results on the explosion
disaster effects of premixed hydrogen and methane gas driven by concentration. Based on …

Effect of solid obstacle distribution on flame acceleration and DDT in obstructed channels filled with hydrogen-air mixture

J Wang, X Zhao, L Gao, X Wang, Y Zhu - International Journal of Hydrogen …, 2022 - Elsevier
Ensuring hydrogen safety has become of great significance nowadays, whose leakage can
possible result in the deflagration to detonation (DDT). The numerical study aims to explore …

Modeling of non-homogeneous premixed hydrogen-air flame acceleration and deflagration to detonation transition in an obstructed channel

Z Sheng, G Yang, W Gao, S Li, Q Shen… - International Journal of …, 2024 - Elsevier
Abstract This paper uses Large Eddy Simulation (LES) technology to study the dynamic
behavior of flame acceleration (FA) and deflagration-to-detonation transition (DDT) in a duct …

Flow-field analysis and pressure gain estimation of a rotating detonation engine with banded distribution of reactants

XY Liu, MY Luan, YL Chen, JP Wang - International Journal of Hydrogen …, 2020 - Elsevier
The flow-field structure and pressure gain performance of a rotating detonation engine with
banded distribution of reactants have been studied using two-dimensional numerical …

Experimental study on the effects of different fluidic jets on the acceleration of deflagration prior its transition to detonation

J Cheng, B Zhang, H Liu, F Wang - Aerospace Science and Technology, 2020 - Elsevier
Fluidic jet-in-crossflow (JICF) is a reliable technique facilitating the flame acceleration and
the transition from deflagration to detonation, most previous investigations on this project …

Effect of diffusion time on the mechanism of deflagration to detonation transition in an inhomogeneous mixture of hydrogen-air

MHS Saeid, J Khadem, S Emami, M Ghodrat - International Journal of …, 2022 - Elsevier
This study aimed to numerically investigate the effect of diffusion time between H 2 injection
and ignition on mechanisms behind deflagration to detonation transition (DDT) in an …

Effects of the quantity and arrangement of reactive jet obstacles on flame acceleration and transition to detonation: A numerical study

J Wang, X Zhao, L Fan, J Pan, Y Zhu - Aerospace Science and Technology, 2023 - Elsevier
Solid obstacles induce the detonation in premixed gases while causing significant thrust
losses. Jet obstacles can alleviate this deficiency, but there have been few studies on multi …

Effect of fluidic obstacles on flame acceleration and DDT process in a hydrogen-air mixture

J Wang, X Zhao, JP Dimi-Ngolo, L Gao, J Pan… - International Journal of …, 2023 - Elsevier
Using solid obstacles to accelerate the deflagration to detonation transition (DDT) process
induces additional thrust loss, and fluidic obstacles can alleviate this problem to a certain …

Investigation of the effect of turbulence induced by double non-reactive gas jet on the deflagration-to-detonation transition

J Cheng, B Zhang, Z Yang, H Liu - Aerospace Science and Technology, 2022 - Elsevier
Abstract Jet-in-crossflow (JICF) is proved to be advantageous to accelerate flame
propagation and stimulate the deflagration-to-detonation transition (DDT) process in the …