Journal ArticleDOI
Transition from Symmetric to Asymmetric Flame Anchoring in Two-Dimensional Channels with Sudden Expansion
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In this paper, the symmetric to asymmetric transitions of laminar-premixed methane-air flames anchoring in symmetric sudden expansion channels were explored, and numerical and experimental studies on flame anchoring pheno...Abstract:
Symmetric to asymmetric transitions of laminar-premixed methane-air flames anchoring in symmetric sudden expansion channels are explored. Numerical and experimental studies on flame anchoring pheno...read more
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Journal ArticleDOI
Numerical study of heat transfer and flow structure over a microscale backstep
Hassnia Hajji,Lioua Kolsi,Kaouther Ghachem,Chemseddine Maatki,Ahmed Hussein,Mohamed Naceur Borjini +5 more
TL;DR: In this article, a two and three-dimensional numerical simulation of a flow through a sudden expansion and contraction microchannels is presented, showing the apparition of a separate vortex, situated in the corner after the sudden expansion of the microchannel for low Reynolds numbers.
References
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ReportDOI
Chemkin-II : A Fortran Chemical Kinetics Package for the Analysis of Gas Phase Chemical Kinetics
Journal ArticleDOI
Simplified Reaction Mechanisms for the Oxidation of Hydrocarbon Fuels in Flames
TL;DR: In this paper, simplified reaction mechanisms for the oxidation of hydrocarbon fuels have been examined using a numerical laminar flame model, and a simple procedure to determine the best values for the reaction rate parameters is demonstrated.
Journal ArticleDOI
Characteristics of combustion in a narrow channel with a temperature gradient
TL;DR: In this paper, a cylindrical quartz tube with an inner diameter of 2mm was used as a model channel, and the downstream part of the tube was heated by an external heat source, and hence the temperature gradient in the axial direction was formed in the tube.
Journal ArticleDOI
Nonlinear flow phenomena in a symmetric sudden expansion
TL;DR: In this article, the origin of steady asymmetric flows in a symmetric sudden expansion is studied using experimental and numerical techniques, and it is shown that the asymmetry arises at a symmetry-breaking bifurcation and good agreement between the experiments and numerical calculations is obtained.
Journal ArticleDOI
Asymmetric flows and instabilities in symmetric ducts with sudden expansions
TL;DR: In this paper, the spectral distributions of the fluctuations in velocity are quantitatively related to the dimensions of the two unequal regions of flow recirculation, and it is shown that the intensity of fluctuating energy in these low Reynolds number flows can be larger than that in corresponding turbulent flows.
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