Results 31 to 40 of about 5,491,792 (284)

Thermal Response Characteristics of Concrete-Filled Steel Tube Columns with Flame Encapsulation Thickness [PDF]

open access: yesE3S Web of Conferences
In order to elucidate the influence of flame encapsulation thickness on the thermal response characteristics of concrete-filled steel tube columns in a fire environment, a study was conducted focusing on the primary control mechanism of heat radiation ...
Yang Can, Zhang Zhaoqiang
doaj   +1 more source

Flame Detection Method In Video Using Covariance Descriptors [PDF]

open access: yes, 2011
Video fire detection system which uses a spatio-temporal covariance matrix of video data is proposed. This system divides the video into spatio-temporal blocks and computes covariance features extracted from these blocks to detect fire.
Osman Gunay   +7 more
core   +1 more source

Fundamental studies of combustion of droplet and vapour mixtures [PDF]

open access: yes, 2010
There are few experimental data of a fundamental nature that clearly demonstrate the similarities and differences in burning rates between single phase and two phase combustion, either in laminar or turbulent conditions. Such data are essential towards a
Saat, Aminuddin
core   +6 more sources

Auto-Ignition and Flame Stabilization of Hydrogen / Natural Gas / Nitrogen Jets in a Vitiated Cross-Flow at Elevated Pressure [PDF]

open access: yes, 2013
The influence of natural gas (NG) on the auto-ignition behavior of hydrogen (H2)/nitrogen (N2) fuel jets injected into a vitiated cross-flow was studied at conditions relevant for practical combustion systems (p = 15 bar, Tcross-flow = 1173 K).
Aigner, Manfred   +5 more
core   +1 more source

Equivalence Ratio Modelling of Premixed Propane Flame by Multiple Linear Regression Using Flame Color and Spatial Characteristics

open access: yesMeasurement Science Review, 2023
Equivalence ratio (Φ) is one of the most important parameters in combustion diagnostics. In previous studies, flame color characteristics have been widely applied to model the Φ of premixed hydrocarbon flames.
Yang Hao   +4 more
doaj   +1 more source

A simulated study on intermittent flame feature of mass fire in channel structure

open access: yesCase Studies in Thermal Engineering, 2022
Compared with the intermittent thermal-flame behavior in ordinary building, the flame behavior may also occur in mass fire inside channel structures, accompanied by distinct thermal characteristics, which is rarely studied.
Xi Zhang, Qing Lai, Huang Xiao, Jie Li
doaj   +1 more source

Flame Detection for Video-Based Early Fire Warning for the Protection of Cultural Heritage [PDF]

open access: yes, 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

Hydrogen-Bond Enabled Phosphite Based Intrinsic Flame-Retardant Solid-Solid Phase Change Materials Using Catalyst/Solvent-Free Multi-Component Reaction for Battery Thermal Management. [PDF]

open access: yesAdv Sci (Weinh)
The phosphite group endows intrinsic flame retardancy, while the P = O bond enhances intermolecular interactions to realize solid‐solid phase transition. Battery thermal management tests show the materials extend the safe working time of lithium‐ion batteries by 200%. Cone calorimeter tests indicate a 14s delay in ignition time, and reductions of 37.6%,
Liu C   +9 more
europepmc   +2 more sources

Dynamic behavior and flame acceleration of outwardly expanding flame in hydrogen-air mixture

open access: yesNihon Kikai Gakkai ronbunshu, 2016
From the perspective of safety, it is necessary to assess the risk of hydrogen-air deflagration accurately. Especially, flame propagation velocity is one of the most important factors.
Toshiyuki KATSUMI   +3 more
doaj   +1 more source

Combustion Characteristics of Natural Gas/Air Flat Premixed Laminar Flames in a Developed Matrix Burner

open access: yesScientific African, 2023
The natural gas flat flame characteristics are experimentally and numerically investigated under different equivalence ratios. A matrix burner is designed so that the natural gas-air mixture from the matrix burner makes up the flat flame.
M. Shehata, I.A. Ibrahim, H.M. Gad
doaj   +1 more source

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