Results 71 to 80 of about 1,374 (210)

A Level Set Approach for a Premixed Flame Based on a New Concept of Flame Speed

Journal of Thermal Science and Technology, 2011
In this paper we propose a new level set approach to describe not only a flame's surface but also to the flame's spatial distribution. First, we derived the mathematical formulation for a one-dimensional laminar premixed flame, where the steady
Yingjie LIU, Nobuyuki OSHIMA
doaj   +1 more source

Repeated Pleistocene Permafrost Episodes in the Western Pannonian Basin

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Concerning the study of past periglacial processes, the Pannonian Basin is a key area as it contains the southernmost frost polygons found in Central Europe. The presence or absence of permafrost is still, however, a matter of debate, and data on the timing of frost action are also scarce.
Krisztina Sebe, Ágnes Novothny, Gergely Surányi, Barbara Varga, László Fodor, Gábor Csillag   +5 more
wiley   +1 more source

Applications of Hydrogenous Species for Initiation of Carbon Monoxide/Air Premixed Flame

Energies
Carbon monoxide (CO) is classified as a simple fuel that contains one carbon and one oxygen atom. The oxidation of CO with an oxidizer is relatively unusual, with the oxidation of CO having a slow reaction time.
Annas Fauzy, Guan-Bang Chen, Ta-Hui Lin
doaj   +1 more source

Sustainable Utilization and Fire Protection of Wood‐Based Composites in Buildings: Innovations, Challenges, and Future Directions

Sustainable Development, EarlyView.
ABSTRACT The increasing use of wood and wood‐based composites in construction reflects a global shift toward renewable materials that support sustainable development objectives, including carbon reduction and responsible resource use. While wood offers substantial environmental benefits compared to conventional materials such as concrete and steel, its
Qaisar Munir, Marko Hyvärinen, Timo Kärki   +2 more
wiley   +1 more source

Polysulfide Immobilization and Sulfur Conversion Kinetics Promotion via a Tetrathiafulvalene–Crown Ether COF@Graphene Layer for High‐Rate Lithium–Sulfur Batteries

Small, EarlyView.
A polysulfide‐regulating covalent organic framework (TUS‐44) integrating tetrathiafulvalene and crown‐ether linkers forms an electron‐delocalized, ion‐coordinative network that synergistically mediates Li–S redox chemistry. When interfaced with graphene, the TUS‐44@G layer functions as a catalytic and chemisorptive interface, enabling efficient ...
Kai Sun, Tsukasa Irie, Samim Reza, Kohki Sasaki, Mika Nozaki, Tokuhisa Kawawaki, Yujun Fu, Dequan Liu, Ranjit Thapa, Saikat Das, Deyan He, Yuichi Negishi   +11 more
wiley   +1 more source

Perfluorohexanone for Clean Fire Suppression: Mechanisms, System Design, Applications, and Future Directions

Safety Science and Technology, EarlyView.
Driven by halon and high GWP agent phase out, perfluorohexanone is increasingly deployed in enclosures such as data centers, marine machinery spaces, and industrial process lines. This review summarizes application performance, discharge and distribution design, material compatibility, and byproduct control and maps practical gaps for large volume and ...
Zhilei Yu, Haibin Dong, Yanfeng Sheng, Xuelei Xian, Dehua Zhang, Feiran Li, Liang Liu, Junchao Zhao, Heping Zhang   +8 more
wiley   +1 more source

Numerical study of the quenching of a laminar premixed hydrogen flame

MATEC Web of Conferences, 2018
A numerical analysis of the quenching of a laminar, premixed hydrogen-air flame is presented. A global and a detailed reaction mechanism are considered.
Pfeiffelmann Björn, Benim Ali Cemal
doaj   +1 more source

Experimental Study on Laminar Burning Velocity and Flame Instability of Liquefied Petroleum Gas/Dimethyl Ether Blended Gas: Effects of Equivalence Ratio and Blended Ratio

Safety Science and Technology, EarlyView.
This study reveals the regulatory effect of LPG addition on laminar burning velocity of DME/air mixtures, and elucidates the governing mechanisms of flame instability under varying initial conditions. ABSTRACT Liquefied petroleum gas/dimethyl ether (LPG/DME) blended gas is a promising clean alternative fuel, characterized by high efficiency and clean ...
Qi Zhang, Bowen Liu, Zezheng Miao, Gang Zhou, Wenchao Song, Jun Wang, Yixiang Fu, Kunyu Li, Hongda Cao, Yuhang Ji, Xiajiaoyang Ning, Yi Xie, Yang Kong   +12 more
wiley   +1 more source

Turbulent and Stable/Unstable Laminar Burning Velocity Measurements from Outwardly Propagating Spherical Hydrogen-Air Flames at Elevated Pressures

Journal of Thermal Science and Technology, 2006
The laminar burning velocity of pre-mixed hydrogen-air mixtures was measured in a fan stirred combustion bomb. Unstretched laminar burning velocities and Markstein lengths were obtained at 0.10MPa for equivalence ratios of 0.4, 0.6, 0.8 and 1.0 using ...
Andrew SMALLBONE, Kousaku TSUNEYOSHI, Toshiaki KITAGAWA   +2 more
doaj   +1 more source

Combustion and Product Characteristics of Environmentally Friendly Flame Retardant 1,1,3,3,3‐Pentafluoropropene With Three Flammable Working Fluids

Safety Science and Technology, EarlyView.
This study investigated the combustion characteristics of mixtures of the environmentally friendly flame retardant HFO‐1225zc with three combustible working fluids (HFO‐1234yf, HFC‐32, and HFO‐1243zf). The flame retardant efficacy of HFO‐1225zc on three working fluids decreases in the order: HFO‐1234yf, HFC‐32, HFO‐UFL1243zf. ABSTRACT The environmental
Biao Feng, Siqi Li, Bingrui Wang, Chaofan Zhang, Hongying Wu, Xing Li, Guoqing Shi, Suxia Ma, Dan Wang   +8 more
wiley   +1 more source