Results 81 to 90 of about 1,135 (238)

Numerical investigation on turbulent flame jet characteristics of ultra-lean H2/air ignited by pre-chamber enrichment strategy

Energy Conversion and Management: X
Pre-chamber enrichment for igniting ultra-lean premixed H2/air is an effective strategy for achieving ultra-low emission and improved fuel economy. This study employed a three-dimensional numerical simulation based on a constant volume combustion chamber
Wenchao Zhu, Xuanrui Zhang, Mingkun Zhang, Shuo Yin, Xianrong Wu, Wuqiang Long, Xiangyu Meng   +6 more
doaj   +1 more source

Modern Fire Safety Protocols in the Archeological Contexts: A New Tool for Studying the Health and Behavioral Effects of Fire Use in Semi‐Closed Spaces

Archaeometry, EarlyView.
ABSTRACT This study evaluates the application of computational fluid dynamics (CFD) simulations, integrated with controlled fire experiments, to investigate combustion processes in semi‐closed spaces. The framework enables systematic modeling of smoke dispersal, particulate transport, and hearth performance under variable morphologies and ventilation ...
Yafit Kedar
wiley   +1 more source

Ignition and flame sptead in laminar mixing layers

, 1994
In order to identify some of the mathematical problems encoun-tered in analyzing the ignition and ñame spread in mixing layéis, \ve shall describe the structure of the laminar mixing layer between two parallel streams of a fu el and air, initially ...
Liñán Martínez, Amable
core  

After the Hype: Resilience Seeking in Emerging Technology Ecosystems

Journal of Product Innovation Management, EarlyView.
ABSTRACT Academic Summary Hype often helps emerging technology ecosystems gain early support for their innovative value propositions, but the initial excitement around the technology typically vanishes at some point. This decrease in excitement and support may lead some ecosystems to fail while others are resilient and recover.
Fiona Schweitzer, Stacey L. Howard‐Malek, Maximilian Palmié   +2 more
wiley   +1 more source

A Review of Marine Dual-Fuel Engine New Combustion Technology: Turbulent Jet-Controlled Premixed-Diffusion Multi-Mode Combustion

Energies
Driven by stringent emission regulations, advanced combustion modes utilizing turbulent jet ignition technology are pivotal for enhancing the performance of marine low-speed natural gas dual-fuel engines.
Jianlin Cao, Zebang Liu, Hao Shi, Dongsheng Dong, Shuping Kang, Lingxu Bu   +5 more
doaj   +1 more source

LES of n-Dodecane Spray Combustion Using a Multiple Representative Interactive Flamelets Model

Oil & Gas Science and Technology, 2017
A single-hole n-dodecane spray flame is studied in a Large-Eddy Simulation (LES) framework under Diesel-relevant conditions using a Multiple Representative Interactive Flamelets (MRIF) combustion model. Diesel spray combustion is strongly affected by the
Davidovic Marco, Falkenstein Tobias, Bode Mathis, Cai Liming, Kang Seongwon, Hinrichs Jörn, Pitsch Heinz   +6 more
doaj   +1 more source

Transboundary Spanning in Social Movements: Organizational Structure and Antiracism in the US Extinction Rebellion Movement

Sociological Forum, EarlyView.
ABSTRACT This paper introduces transboundary spanning as a novel concept for social movement analysis. Using Extinction Rebellion (XR) in the United States as a case study, we examine the relational dynamics of social movement boundary spanning: processes wherein actors and organizations engage across symbolic boundaries.
Tobias Müller, Peter Gardner
wiley   +1 more source

Advances on Deflagration to Detonation Transition Methods in Pulse Detonation Engines

Energies
Pulse detonation engines (PDEs) have become a transformative technology in the field of aerospace propulsion due to the high thermal efficiency of detonation combustion. However, initiating detonation waves within a limited space and time is key to their
Zhiwu Wang, Weifeng Qin, Lisi Wei, Zixu Zhang, Yuxiang Hui   +4 more
doaj   +1 more source

Direct initiation of detonation with ignition tube

, 2004
Experiments of direct initiation of hydrogen-oxygen by means of a hot turbulent jet were made. Results indicate that the length of ignition tube is the dominant factor in determining the ignition capability of hot turbulent jet, and that the ignition ...
Yu HR(俞鸿儒), 陈宏, Zhang XY(张新宇), Chen H(陈宏)   +3 more
core   +1 more source

Large eddy simulation of spark ignition in a turbulent methane jet [PDF]

, 2008
Large eddy simulation (LES) is used to compute the spark ignition in a turbulent methane jet flowing into air. Full ignition sequences are calculated for a series of ignition locations using a one-step chemical scheme for methane combustion coupled with ...
Konstantinos Boulouchos, Karlin, Illiya V., Veynante, Denis, Kurdyumov, Vadim N., R. Seiser, Richardson, E.S., FRASSOLDATI, ALESSIO, RANZI, ELISEO MARIA, Boulouchos, Konstantinos, Legros, G, Gorban, Alexander N., Guibaud, A, Gorban, A.N., Consalvi, J-L, Gonçalves dos Santos, Rogerio, Legros, Guillaume, Boulouchos, K., Lecanu, Mickael, Citerne, J-M, Eliodoro Chiavazzo, Lacaze, G, Chiavazzo, Eliodoro, Iliya V. Karlin, K. Seshadri, Citerne, Jean-Marie, Fernández-Galisteo, Daniel, FARAVELLI, TIZIANO, Karlin, I.V., Sánchez-Sanz, Mario, Iacona, Estelle, Guibaud, Augustin, CUOCI, ALBERTO, Alexander N. Gorban, Ducruix, Sébastien, Consalvi, Jean-Louis, Gicquel, Olivier, Poinsot, T, U. Niemann   +37 more
core   +1 more source