Results 51 to 60 of about 186,702 (237)
High hydrogen content syngas fuel burning in lean premixed spherical flames at elevated pressures: Effects of preferential diffusion [PDF]
, 2016 This study addresses the effects of preferential diffusion on flame structure and propagation of high hydrogen content (HHC) turbulent lean premixed hydrogen-carbon monoxide syngas flames at elevated pressures.
Luo, KH +4 more
core +1 more source
Flame speed in diffusion dominated premixed flames
Combustion Theory and Modelling, 2022 Development of a premixed flame theory that includes the effects of flame stretch and curvature has been at the forefront of combustion research. Diffusion dominated flames such as highly curved flame balls present a challenging flame structure that has not been included in current flame stretch theory so far.
Faizan Habib Vance +2 more
openaire +1 more source
Luminous Flame Height Correlation Based on Fuel Mass Flow for a Laminar to Transition-to-Turbulent Regime Diffusion Flame [PDF]
arXiv, 2020 This paper presents a flame-height correlation for laminar to transition-to-turbulent regime diffusion flames. Flame-height measurements are obtained by means of numerical and experimental studies in which three high definition cameras were employed to take frontal, lateral and 45{\deg} angled images simultaneously.
arxiv
Frontiers in Materials, 2021 As a product generated from incomplete combustion, soot is harmful to people’s health and the environment. In recent decades, much attention has been paid to the control of soot generation in combustion systems. Efforts to reduce soot emissions depend on
Jianfei Xi +3 more
doaj +1 more source
Turbulent Flame Speed Scaling for Expanding Flames with Markstein Diffusion Considerations [PDF]
, 2012 In this work we clarify the role of Markstein diffusivity on turbulent flame speed and it's scaling, from analysis and experimental measurements on constant-pressure expanding flames propagating in near isotropic turbulence. For all C0-C4 hydrocarbon-air mixtures presented in this work and recently published C8 data from Leeds, the normalized turbulent
arxiv +1 more source
Impinging Diffusion Flame and NO Production [PDF]
International Journal of Engineering and Technology, 2013 This paper reports a numerical investigation of an impinging diffusion flame on the pollutant emission for tree hydrocarbon fuels characteristics. The effects of the wall plate, the nozzle diameter, the Reynolds number on both thermal and prompt NO production.
Nadjib Ghiti +2 more
openaire +2 more sources
Cogent Engineering, 2022 Fuel dilution is commonly used to reduce soot emissions from combustion engines or control carbon black morphology during fuel pyrolysis. Dilution has both physical and chemical effects on soot formation; however, the impact of fuel dilution on each soot
Arash Khabazipur, Nick A. Eaves
doaj +1 more source
, 2017 Recent studies within the diffusive-thermal (constant-density) approximation have shown that, for premixed flames freely propagating in narrow adiabatic channels, the instabilities induced by differential diffusion may result in non-symmetric solutions ...
Fernandez-Galisteo, Daniel +3 more
core +1 more source
Modelling of soot formation in laminar diffusion flames using a comprehensive CFD-PBE model with detailed gas-phase chemistry [PDF]
, 2016 A discretised population balance equation (PBE) is coupled with an in-house computational fluid dynamics (CFD) code in order to model soot formation in laminar diffusion flames. The unsteady Navier–Stokes, species and enthalpy transport equations and the
Akridis, P, Rigopoulos, S
core +1 more source
Experimental Investigation of the Continuous Transition of Flame-Spreading near the Blow-Off Limit
Journal of Combustion, 2020 This study investigates the continuous transition from flame-spreading to stabilized combustion near the blow-off limit in opposed forced flow by using expanding solid fuel duct that makes distribution of oxidizer velocity in the axial direction.
K. Komizu, Y. Saito, A. Tsuji, H. Nagata
doaj +1 more source