Results 31 to 40 of about 15,158 (313)
Flame Detection for Video-Based Early Fire Warning for the Protection of Cultural Heritage [PDF]
, 2012 Cultural heritage and archaeological sites are exposed to the risk of fire and early warning is the only way to avoid losses and damages. The use of terrestrial systems, typically based on video cameras, is currently the most promising solution for ...
Tsalakanidou, Filareti +20 more
core +1 more source
Effect of Temperature Conditions on Flame Evolutions of Turbulent Jet Ignition
Energies, 2021 Turbulent jet ignition technology can significantly improve lean combustion stability and suppress engine knocking. However, the narrow jet channel between the pre-chamber and the main chamber leads to some difficulties in heat exchange, which ...
Jiaying Pan +5 more
doaj +1 more source
Propagation of flame fronts [PDF]
The Journal of the Australian Mathematical Society. Series B. Applied Mathematics, 1990 AbstractThe propagation of a flame front in a combusting gas is considered in the limit in which the width of the reaction-zone is small compared with some overall flow dimension. In this approximation, the front propagates along its normals at a speed dependent on the local curvature of the front and is governed by a nonlinear equivalent of the ...
openaire +1 more source
Nuclear Engineering and Technology, 2022 In the geological repository of radioactive nuclear waste, anaerobic corrosion can generate hydrogen, and may conservatively lead to the production of hydrogen-air layer. The accumulated hydrogen may cause a hazardous flame propagation resulting from any
Je Ir Ryu +3 more
doaj +1 more source
Effects of curvature on flame acceleration in micro channels
, 2022 The effects of channel curvature on the flame propagation are examined for premixed flames in micro channels. Previous studies have shown that curved channels can enhance the flame stretching, which can significantly increase the flame propagation speed.
Li, Xing +5 more
core +1 more source
Prediction of hydrogen flame propagation in a channel with exit contraction [PDF]
E3S Web of Conferences, 2019 The propagation of a flame front in a homogeneous and initially quiescent hydrogen-air mixture in a channel with exit contraction is numerically analyzed by means of Computational Fluid Dynamics.
Cemal Benim Ali, Pfeiffelmann Björn
doaj +1 more source
Wavelet based flickering flame detector using differential PIR sensors [PDF]
, 2011 A Pyro-electric Infrared (PIR) sensor based flame detection system is proposed using a Markovian decision algorithm. A differential PIR sensor is only sensitive to sudden temperature variations within its viewing range and it produces a time-varying ...
Kose, K. +17 more
core +1 more source
Flame propagation of combustible dusts: A Mallard-Le Chatelier inspired model [PDF]
, 2023 In this work, a three-layers Mallard-Le Chatelier inspired theoretical model is developed to fully characterise the steps occurring during the flame propagation of combustible dusts/air.
G. Luciani +7 more
core +1 more source
Numerical Study on Coupled Combustion of PMMA Counter-Directional Flame Spread at Variable Slope
FireThis paper investigates the dual effects of slope variation and flame interaction on counter-directional flame propagation through numerical simulations of polymethylmethacrylate (PMMA) plates.
Qiong Liu +6 more
doaj +1 more source
Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
wiley +1 more source