Results 61 to 70 of about 72,917 (300)

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

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Flame Detection for Video-based Early Fire Warning Systems and 3D Visualization of Fire Propagation [PDF]

, 2012
Early and accurate detection and localization of flame is an essential requirement of modern early fire warning systems. Video-based systems can be used for this purpose; however, flame detection remains a challenging issue due to the fact that many ...
Dimitropoulos, Kosmas, Grammalidis, Nikos, Tsalakanidou, Filareti   +2 more
core   +1 more source

Mastering Complexity toward High‐Performance Multi‐Principal Element Alloy‐Based Films and Coatings: A Review on Microstructural Regulation and Property Optimization

Advanced Science, EarlyView.
This review provides a comprehensive exploration of microstructure regulation strategies for multi‐principal element alloy‐based films and coatings, with a focus on the interplay between elemental composition, nanoscale architecture, heterostructures and interfacial engineering in tailoring their properties and functions. A systematic analysis of their
Jiaming Cao, Jiayi Sun, Heqing Li, Zhiqiang Wu, Xianghai An   +4 more
wiley   +1 more source

Experimental research on flame propagation characteristics of coal dust combustion

Journal of Measurement Science and Instrumentation, 2021
The presence of coal dust explosions in coal mining are significant safety hazards. This study mainly explores the flame propagation of coal dust combustion so as to provide a theoretical basis for the prevention and control of coal dust explosions.
LIU Yifei, ZHANG Yun, YANG Zhenxin, LIU Xuanshen, CHEN Chengfang, BU Lingtao, XU Sen, CAO Weiguo   +7 more
doaj  

Acceleration of Premixed Flames in Obstructed Pipes with Both Extremes Open

Energies, 2020
Premixed flame propagation in obstructed channels with both extremes open is studied by means of computational simulations of the reacting flow equations with a fully-compressible hydrodynamics, transport properties (heat conduction, diffusion and ...
Abdulafeez Adebiyi, Olatunde Abidakun, V’yacheslav Akkerman   +2 more
doaj   +1 more source

A Multi-Scale Numerical Model for Investigation of Flame Dynamics in a Thermal Flow Reversal Reactor

Energies, 2022
In this paper, the flame dynamics in a thermal flow reversal reactor are studied using a multi-scale model. The challenges of the multi-scale models lie in the data exchanges between different scale models and the capture of the flame movement of the ...
Jia Li, Ming-Ming Mao, Min Gao, Qiang Chen, Jun-Rui Shi, Yong-Qi Liu   +5 more
doaj   +1 more source

Perspective: Hollow Core Optical Fibres for Ultraviolet and Visible Wavelengths

Advanced Science, EarlyView.
Hollow core optical fibres bypass material constraints that limit optical fibres at ultraviolet and visible wavelengths. However, their challenging fabrication has limited their development, and significant gains in performance remain possible. In this perspective we outline approaches to enable the next generation of fibres for shorter wavelengths ...
Robbie Mears, Kerrianne Harrington, Jonathan C. Knight, William J. Wadsworth, James M. Stone, Tim A. Birks   +5 more
wiley   +1 more source

Multimodal Cross‐Attentive Graph‐Based Framework for Predicting In Vivo Endocrine Disruptors

Advanced Science, EarlyView.
A multimodal cross‐attentive graph neural network integrates molecular graphs with androgen and estrogen adverse outcome pathway (AOP)–anchored in vitro assay signals to predict in vivo endocrine disruption. By fusing information on Tier‐1 AOP logits with chemical structures, the framework achieves high accuracy and provides assay‐traceable ...
Eder Soares de Almeida Santos, Gustavo Felizardo Santos Sandes, Artur Christian Garcia da Silva, Holli‐Joi Martin, Eugene N. Muratov, Rodolpho de Campos Braga, Bruno Junior Neves   +6 more
wiley   +1 more source

Study on the shock wave and flame propagation characteristics of gas explosion in multi-branch tunnel network

Case Studies in Thermal Engineering
To study the explosion shock wave propagation law and flame propagation mechanism within a multibranch complex tunnel network, we built a multibranch complex pipeline experimental system consisting of parallel and angular branches.
Niu Yihui, Li Ziran, Si Rongjun, Wang Lei, Zhu Pikai, Jiang Lingui, Gong Yuke, Du Bingshu   +7 more
doaj   +1 more source