Results 31 to 40 of about 1,392 (299)
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
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Machine learning tabulation of thermochemistry of fuel blends
Applications in Energy and Combustion Science, 2022 The objective of the present work is to develop a machine learning tabulation methodology for thermochemistry that accounts for fuel blends. The approach is based on the hybrid flamelet/random data and multiple multilayer perceptrons (HFRD-MMLP ...
Tianjie Ding +2 more
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Alexandria Engineering Journal, 2022 Hydrogen-blended fuel is of fundamental interest due to difficulties in modelling and its practical significance for the development of high-performance hydrogen combustion devices and safety technologies for the prediction and prevention of fire or ...
Siva PR Muppala
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Energies, 2011 Direct Numerical Simulations (DNS) have been conducted to study the response of initially laminar spherical premixed methane–air flame kernels to successively higher turbulence intensities at five different equivalence ratios.
Gábor Janiga +2 more
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The interaction of high-speed turbulence with flames: Global properties and internal flame structure [PDF]
Combustion and Flame, 2010 We study the dynamics and properties of a turbulent flame, formed in the presence of subsonic, high-speed, homogeneous, isotropic Kolmogorov-type turbulence in an unconfined system. Direct numerical simulations are performed with Athena-RFX, a massively parallel, fully compressible, high-order, dimensionally unsplit, reactive-flow code.
Poludnenko, Alexei Y., Oran, Elaine S.
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Turbulent partially cracked ammonia/air premixed spherical flames
Fuel CommunicationsThe combustion of ammonia requires, for most energy conversion systems, a combustion promoter such as hydrogen to guarantee the start-up, stability and combustion efficiency.
S. Zitouni +2 more
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Chemical Engineering Transactions, 2014 The ISO 1 m3 dust explosion vessel was instrumented with thermocouples acting as flame detectors. These were used with methane/air gas explosions to show that the explosion flame was spherical in the constant pressure phase of the explosion and that a ...
H. Sattar +3 more
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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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Applications in Energy and Combustion Science, 2022 The flame behaviour and the lean blow-off (LBO) mechanism of a multi-burner linear arrangement of five identical burners each fitted with a central bluff body and a swirler up- stream, operated in either premixed or non-premixed mode, was studied ...
Roberto Ciardiello +3 more
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