Results 51 to 60 of about 5,124 (165)

Analysis of flame acceleration in open or vented obstructed pipes

Physical Review E, 2017
While flame propagation through obstacles is often associated with turbulence and/or shocks, Bychkov et al. [V. Bychkov et al., Phys. Rev. Lett. 101, 164501 (2008)10.1103/PhysRevLett.101.164501] have revealed a shockless, conceptually laminar mechanism of extremely fast flame acceleration in semiopen obstructed pipes (one end of a pipe is closed; a ...
Vitaly, Bychkov, Jad, Sadek, V'yacheslav, Akkerman   +2 more
openaire   +3 more sources

Investigation of Pressure Rise and Flame Acceleration Characteristics in a Single Channel of Wave Rotor Combustor with Spoilers

International Journal of Aerospace Engineering, 2019
A simplified single channel wave rotor combustor (WRC) experimental rig was established, in which the spoilers with different blockage ratios (BR) could be conveniently installed and disassembled.
Jianzhong Li, Kaichen Zhang, Wei Li, Li Yuan   +3 more
doaj   +1 more source

Propagation characteristics of flame and shock wave in gas–coal dust coupled explosions in a variable-cross-section pipeline

Scientific Reports
To reveal the evolution characteristics of flame and shock waves in gas-coal dust coupled explosions under conditions of sudden cross-sectional changes, this paper designs and builds a transparent plexiglass pipeline test system with three different ...
Shaoshuai Guo, Guoxun Jing, Yuansheng Wang, Chuang Liu   +3 more
doaj   +1 more source

Study on deflagration-to-detonation transition in a staggered array of obstacles

Baozha yu Chongji
Study on gas deflagration-to-detonation transition (DDT) is of great significance for the research and development of industrial explosion prevention and detonation propulsion technology. Staggered array of obstacles is a typical obstacle layout that may
Min LI, Huahua XIAO
doaj   +1 more source

Experimental study on flame propagation characteristics of Hydrogen premixed gas in gas pipeline

E3S Web of Conferences, 2018
Hydrogen is the cleanest high-energy gas fuel, and also is the main industrial material. However, hydrogen is more explosive and more powerful than conventional gas fuels, which restricts its application.
Ma Danzhu, Li Zhuang, Jia Fengrui, Li Zhou   +3 more
doaj   +1 more source

Impact of a Variable Blockage Ratio on the Detonation Transition in a Pre-Detonator

Fire
The deflagration-to-detonation transition (DDT) is a critical process for achieving reliable ignition in detonation-based propulsion systems, such as Rotating Detonation Engines (RDEs).
Yuchang Gil, Suhyeong Lee, Sangkyu Han, Sungwoo Park   +3 more
doaj   +1 more source

Numerical Study of Homogenous/Inhomogeneous Hydrogen–Air Explosion in a Long Closed Channel

Fire
Hydrogen is regarded as a promising energy source for the future due to its clean combustion products, remarkable efficiency and renewability. However, its characteristics of low-ignition energy, a wide flammable range from 4% to 75%, and a rapid flame ...
Jiaqing Zhang, Xianli Zhu, Yi Guo, Yue Teng, Min Liu, Quan Li, Qiao Wang, Changjian Wang   +7 more
doaj   +1 more source

Numerical Characterization of Natural Swirling Flame Evolving in Free Environment via FDS: a Comprehensive Investigation of Fires Problems

Journal of Applied Fluid Mechanics, 2020
In this paper, a numerical study of a swirling flame generated through the interaction between a central fire and its surrounding fires is performed. A swirling flame can be configured by installing a secondary’s sources surrounding the central source ...
M. Al. Thamri, T. Naffouti, S. Gannouni, J. Zinoubi   +3 more
doaj  

A Computational Fluid Dynamic Investigation of Inhomogeneous Hydrogen Flame Acceleration and Transition to Detonation. [PDF]

Flow Turbul Combust, 2018
Khodadadi Azadboni R, Heidari A, Wen JX.
europepmc   +1 more source

Simulation of Flame Acceleration and DDT [PDF]

Linköping Electronic Conference Proceedings, 2018
openaire   +1 more source