Results 31 to 40 of about 47,191 (297)

Study on Hydrogen Combustion Flame Acceleration Mechanism and Prediction Method During Severe Accidents in Nuclear Power Plants

Energies
Combustion caused by hydrogen-dominated combustible gas mixtures presents critical threats to nuclear safety during severe accidents in nuclear power plants, primarily due to their propensity for flame acceleration, deflagration, and subsequent ...
Ran Liu, Jingyi Yu, Xiaoming Yang, Yong Liu, Rubing Ma, Yidan Yuan   +5 more
doaj   +1 more source

Premixed flame propagation in vertical tubes

, 2015
Analytical treatment of premixed flame propagation in vertical tubes with smooth walls is given. Using the on-shell flame description, equations describing quasi-steady flame with a small but finite front thickness are obtained and solved numerically. It
Kazakov, Kirill A.
core   +1 more source

Flame Acceleration Enhancement by Distributed Ignition Points

Journal of Propulsion and Power, 2005
This paper reports on the investigation of a novel method for promoting flame acceleration leading to detonation initiation in a tube. A common method used to initiate a detonation wave is via flame acceleration in an obstacle laden tube. Previous studies with fuel-air mixtures have shown that the measured detonation run-up distance, and corresponding ...
Ciccarelli, Gaby, Johansen, Craig, Hickey, Mark   +2 more
openaire   +2 more sources

Flame acceleration in unconfined lean hydrogen-oxygen mixtures using a hemispherical soap bubble method

Green Energy and Resources
This study investigates the flame acceleration dynamics in lean hydrogen-oxygen mixtures, focusing on critical parameters such as Péclet number, Markstein number, and the acceleration exponent.
Wookyung Kim, Keita Tanaka, Akihiro Ueda, Sushil Raut, Yangkyun Kim, Hongliang Luo   +5 more
doaj   +1 more source

Experimental and Numerical Study of Gas Injection Effect on the Methane–Air Combustion inside a Coaxial Burner

Fluids, 2021
This paper is devoted to the analysis of the effect of gas injection on the efficiency of gaseous fuel burning. A coaxial burner with a perforated inner wall is presented in which the methane–air acceleration is observed.
Alexey Kiverin, Boris Kichatov, Alexey Korshunov, Vladimir Gubernov, Ivan Yakovenko, Andrey Yarkov   +5 more
doaj   +1 more source

Critical Criterion for Flame Spread Acceleration of Concave Surfaces with Different Curvatures

Fire
Concave surface is a common geometry in both industrial buildings and natural environments; the flame spread behaviors on this special surface are worth studying, while few studies have been completed yet.
Yang Zhou, Haoteng Chen, Xu Yan
doaj   +1 more source

Laser-Plasma Acceleration with FLAME and ILIL Ultraintense Lasers

Applied Sciences, 2013
We report on the development of radiation and electron sources based on laser-plasma acceleration for biomedical and nuclear applications, using both the table top TW laser at ILIL and the 220 TW FLAME laser system at LNF.
Naveen Pathak, Tadzio Levatoy, Luca Labate, Petra Koester, Danilo Giulietti, Antonio Giulietti, Giancarlo Gatti, Giampiero Di Pirro, Andrea Gamucci, Carlo Benedetti, Carlo Alberto Cecchetti, Leonida Antonio Gizzi, Francesco Piastra   +12 more
doaj   +1 more source

Studies on the flame propagation characteristic and thermal hazard of the premixed N2O/fuel mixtures

Defence Technology, 2020
An experimental study was carried out to investigate the flame propagation and thermal hazard of the premixed N2O/fuel mixtures, including NH3, C3H8 and C2H4.
Yu-yan Li, Rong-pei Jiang, Zhi-peng Li, Sen Xu, Feng Pan, Li-feng Xie   +5 more
doaj   +1 more source

Unsteady Combustion of the Heptane-in-Water Emulsion Foamed with Hydrogen–Oxygen Mixture

Applied Sciences, 2023
This research paper numerically studies how hydrocarbon additives affect hydrogen combustion in the process of complex fuel burning on the example of the combustible foam representing the heptane-in-water emulsion foamed with a hydrogen–oxygen mixture ...
Alexey Kiverin, Ivan Yakovenko
doaj   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source