Results 31 to 40 of about 541 (112)

Study of Hedge Ignition and Flame Propagation Characteristics of Unsymmetrical Dimethylhydrazine and Its Metamorphosed Mixtures in a Nitrogen Tetroxide Atmosphere

Energies, 2023
Unsymmetrical dimethylhydrazine (UDMH) is a common liquid propellant widely used in rocket engines and other applications. The safety of UDMH in service is affected by its slow oxidation during long-term storage to form impurities such as dimethylamine ...
Xinhui Wang, Yujia Feng, Jinchao Zhang, Ruirong Ma, Jin Wu, Ruining He, Yang Li, Jinhu Liang   +7 more
doaj   +1 more source

Experimental and Numerical Studies of Ignition Delay Time and Laminar Flame Speed of JP-10 at Elevated Temperature Conditions

Frontiers in Energy Research, 2022
In this work, the laminar flame speeds of JP-10/air mixtures and ignition delay time of JP-10/O2/Ar mixtures have been studied over a wide range of experimental conditions using a premixed Bunsen flame and a shock tube.
Junsen Yang, Yi Wu, Zhenpeng Zhang, Zhenpeng Zhang, Yanlei Shang, Yanlei Shang, Lun Pan   +6 more
doaj   +1 more source

Ignition characteristics of nitromethane-doped ethanol in a heated shock tube

Energetic Materials Frontiers, 2021
Ignition delay times of nitromethane-doped ethanol dual fuels are measured under the micro-combustion engine conditions (8 ​× ​105 ​Pa and 904–1477 ​K). The promotion effect of nitromethane on ethanol ignition is more pronounced at a fuel-lean condition;
Yan-lei Shang, Chong Li, Li He, Zhen-peng Zhang, Hong-bo Ning, Run-tong Zhang, S.N. Luo, Jin-chun Shi   +7 more
doaj   +1 more source

An Empirical Correlation to Predict the Ignition Delay Time for Some Hydrocarbon Fuels [PDF]

Iranian Journal of Chemical Engineering, 2016
Examination of the available ignition delay time data and correlations in the case of methane, butane, heptane, decane, kerosene, Jet-A and ethylene fuels, allowed the derivation and recommendation of standard equations for this property.
F. S. Shariatmadar, Sh. Ghanbari Pakdehi, M. A. Zarei   +2 more
doaj  

An Experimental and Detailed Kinetics Modeling Study of Norbornadiene in Hydrogen and Methane Mixtures: Ignition Delay Time and Spectroscopic CO Measurements

Energies, 2023
High-energy-density compounds such as norbornadiene (NBD) are being considered as potential cost-effective fuel additives, or partial replacements, for high-speed propulsion applications.
Matthew G. Sandberg, Claire M. Grégoire, Darryl J. Mohr, Olivier Mathieu, Eric L. Petersen   +4 more
doaj   +1 more source

Thermodynamic analysis of diesel engine ignition delay under low load conditions

Energy Reports, 2022
In recent decades, renewable energies (e.g., wind and solar) were introduced to reduce the dependency of diesel generation in remote areas and islands power systems.
A.G.M.B. Mustayen, X. Wang, M.G. Rasul, J.M. Hamilton, M. Negnevitsky   +4 more
doaj   +1 more source

Ignition processes and characteristics of charring conductive polymers with a cavity geometry in precombustion chamber for applications in micro/nano satellite hybrid rocket motors

Defence Technology
The arc ignition system based on charring polymers has advantages of simple structure, low ignition power consumption and multiple ignitions, which bringing it broadly application prospect in hybrid propulsion system of micro/nano satellite.
Zhiyuan Zhang, Hanyu Deng, Wenhe Liao, Bin Yu, Zai Yu   +4 more
doaj   +1 more source

Influence of high ethane content on natural gas ignition

Revista Ingenio, 2019
The effect of ethane on combustion and natural gas autoignition was studied in the present paper. Two fuel mixture of natural gas with high ethane content were considered, 75% CH4 – 25% C2H6 (mixture 1), and 50% CH4 – 50% C2H6 (mixture 2).
Hernando Alexander Yepes Tumay, Arley Cardona Vargas   +1 more
doaj   +1 more source

Shock Tube Study of Ignition Delay Times for Hydrogen–Oxygen Mixtures

Fire, 2023
This paper presents the results of measurements of ignition delay times in hydrogen–oxygen mixtures highly diluted with argon. The experiments were carried out behind an incident shock wave at temperatures from 870 to 2500 K, pressures from 0.5 to 1.5 atm, and equivalence ratios from 0.1 to 2.0.
Valery Pavlov, Gennady Gerasimov, Vladimir Levashov, Pavel Kozlov, Igor Zabelinsky, Natalia Bykova   +5 more
openaire   +2 more sources

Study of Optimum Blasting Condition to Lower the Blasting Vibration

Journal of MMIJ, 2018
Because blasting is a quite efficient and economical excavation method, it has been widely applied to tunnel excavation especially in hard rock. However, this method is rarely used to the tunnel site close to residential houses due to its environmental ...
Keita IWANO, Junichi NAGAE, Katsunori FUKUI, Kimihiro HASHIBA   +3 more
doaj   +1 more source