Results 21 to 30 of about 61,190 (204)
Variation of Flame Displacement Speed in a Turbulent Premixed Flame [PDF]
Australasian Fluid Mechanics Conference (AFMC), 2020 Modelling of the flame displacement speed is of interest in many Large Eddy Simulation (LES) frameworks including the Flame Surface Density approach. In this study, a Direct Numerical Simulation (DNS) dataset is used to calculate the displacement speed in a premixed, methane–air, round jet flame in the thin reaction zone (TRZ) regime.
Pavel Panek +3 more
openaire +1 more source
Ultra-Lean Premixed Turbulent Combustion: Challenges of RANS Modelling
Energies, 2022 The main challenge of improving spark ignition (SI) engines to achieve ever increasing thermal efficiencies and near-zero pollutant emissions today concerns developing turbulent combustion under homogeneous ultra-lean premixed mixtures (HULP).
Lorenzo Sforza +3 more
doaj +1 more source
Effect of CH4–Air Ratios on Gas Explosion Flame Microstructure and Propagation Behaviors
Energies, 2012 To reveal the inner mechanism of gas explosion dynamic behavior affected by gas equivalent concentration, a high speed Schlieren image system and flow field measurement technology was applied to record the gas explosion flame propagation and flame ...
Ying Zhang, Yin Zhang, Xianfeng Chen
doaj +1 more source
Large Eddy Simulation of a Turbulent Spray Jet Flame Using Filtered Tabulated Chemistry
Journal of Combustion, 2020 This work presents Large Eddy Simulations of the unconfined CORIA Rouen Spray Burner, fed with liquid n-heptane and air. Turbulent combustion modeling is based on the Filtered TAbulated Chemistry model for LES (F-TACLES) formalism, designed to capture ...
Adrien Chatelier +3 more
doaj +1 more source
Fire, 2023 The current study primarily aimed to simulate detonation initiation via turbulent jet flame acceleration in partial-premixed H2-air mixtures. Different vertical concentration gradients were generated by varying the duration of hydrogen injection ...
Mohammad Hossein Shamsaddin Saeid +3 more
doaj +1 more source
Frontiers in Energy Research, 2022 The thermal safety of building façade energy conservation materials is commonly affected by the wind in the surrounding environment. In addition, multiple fire sources might be formed because of the secondary ignition of the primary fire source.
Wei Zhang, Jingwei Wang
doaj +1 more source
Hybrid algorithm for the detection of turbulent flame fronts
Experiments in Fluids, 2023 This paper presents a hybrid and unsupervised approach to flame front detection for low signal-to-noise planar laser-induced fluorescence (PLIF) images.
O. Chaib +3 more
semanticscholar +1 more source
Energies, 2021 Turbulent combustion modelling in internal combustion engines (ICEs) is a challenging task. It is commonly synthetized by incorporating the interaction between chemical reactions and turbulent eddies into a unique term, namely turbulent flame speed sT ...
Alessandro d’Adamo +2 more
doaj +1 more source
Influence of Turbulent Scalar Mixing Physics on Premixed Flame Propagation
Journal of Combustion, 2011 The influence of reactive scalar mixing physics on turbulent premixed flame propagation is studied, within the framework of turbulent flame speed modelling, by comparing predictive ability of two algebraic flame speed models: one that ...
H. Kolla, N. Swaminathan
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Eurasian Chemico-Technological Journal, 2020 Simulation of turbulent flames using detailed chemical mechanisms is still a challenge in numerical combustion due to the large number of species and the stiffness of the system of governing equations.
F. C. Minuzzi, Ch. Yu, U. Maas
doaj +1 more source