Results 31 to 40 of about 1,020 (262)
Role of pocket formation in the extinction of methane flames subject to strong turbulence
Applications in Energy and Combustion ScienceDespite extensive studies of local and global extinction, it remains unclear how local flame dynamics contribute to the global evolution of a turbulent flame at large Karlovitz numbers. Furthermore, the extent to which canonical laminar flame properties,
Patrick A. Meagher +2 more
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Case Studies in Thermal Engineering, 2019 Synthesis gas (Syngas) is a gaseous mixture that consists of 3 species. It is used in creating synthetic natural gas. In this work, the turbulent non-premixed flame of syngas-air combustion in a round-jet burner is numerically investigated. The burner is
Santiphong Klayborworn, Watit Pakdee
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Effciently generated turbulence for an increased flame speed [PDF]
, 2014 The rate of combustion in premixed flames is to a large extent controlled by the level of turbulence. Fluctuations in the flow field deform the flame front that exists between the premixed reactants and the fully combusted products. The surface area of this flame front is increased as it becomes more wrinkled by the turbulent flow, which increases the ...
openaire +2 more sources
Turbulent Flame Geometry Measurements in a Mass-Production Gasoline Direct Injection Engine
Energies, 2020 Direct optical access to the combustion chamber of a gasoline direct injection (GDI) engine provides extremely valuable information about the combustion process.
Manfredi Villani, Phillip Aquino
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Energy Science & Engineering, 2022 The aim of this paper is to analyze local autoignition induced by secondary flame acceleration. The secondary flame acceleration process and the local autoignition formation mechanism at the condition of the secondary flame acceleration propagation were ...
Yangyang Yu +3 more
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Applications in Energy and Combustion Science, 2023 Ammonia, an efficient hydrogen carrier, is crucial for achieving net-zero emissions. However, its low reactivity, as manifested through small unstretched laminar flame speed (SL,0 ∼ 7 cm/s) and large laminar flame thickness (δL ∼ 2.85 mm) at atmospheric ...
S.S. Shy +3 more
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Arthritis Care &Research, EarlyView.Objective Although the definition of a gout flare is well established, the state of gout flare resolution has not yet been defined. This study aimed to explore patients’ experiences and perceptions of gout flare resolution. Methods Semistructured interviews were conducted with 24 people with gout, guided by open‐ended questions exploring their ...
Sarah Stewart +5 more
wiley +1 more source
Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines
Advanced Engineering Materials, EarlyView.Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl +4 more
wiley +1 more source
Model constant C of turbulent NO reaction time model
Case Studies in Thermal Engineering, 2017 The NO concentration of turbulent jet flames with different fuel, jet velocity, and jet diameter are simulated with the turbulent NO reaction time model. The predicted NO profile has very good agreement with the experimental data.
Qiong Li, Yuexinzhu Lan, Peiyong Wang
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Correlation of flame speed with stretch in turbulent premixed methane/air flames [PDF]
Symposium (International) on Combustion, 1998 Direct numerical simulations of two-dimensional unsteady premixed methane/air flames are performed to determine the correlation of flame speed with stretch over a wide range of curvatures and strain rates generated by intense two-dimensional turbulence.
Chen, J.H., Im, Hong G.
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