Results 21 to 30 of about 6,867 (259)
Thermal-diffusional Instability in White Dwarf Flames: Regimes of Flame Pulsation [PDF]
The Astrophysical Journal, 2017 Abstract Thermal-diffusional pulsation behaviors in planar as well as outwardly and inwardly propagating white dwarf (WD) carbon flames are systematically studied. In the 1D numerical simulation, the asymptotic degenerate equation of state and simplified one-step reaction rates for nuclear reactions are used to study the flame ...
Guangzheng Xing +5 more
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TWO-DIMENSIONAL FLAME INSTABILITY AND CONTROL OF BURNING IN THE HAlF-OPEN FIRECHAMBER
Автоматизация технологических и бизнес-процессов, 2016 The flame stability with regard to two-dimensional exponential perturbations both for the combustion in the half-open fire-chamber and the flame propagating in half-open channels is investigated.
V. E. Volkov
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FirePhysChem, 2021 It was experimentally observed that the front of a propagating flame of a well-mixed diluted methane-oxygen mixture at 298 K and 100–300 Torr does not form von Karman vortex shedding behind the obstacle of cylindrical shape of 30–50 mm in diameter ...
Nickolai M. Rubtsov +3 more
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Instability in a flame ball problem
Discrete and Continuous Dynamical Systems - B, 2007 In this paper we give a rigorous mathematical proof of the instability of stationary radial flame ball solutions of a three dimensional free boundary model which models the combustion of a gaseous mixture with dust in a microgravity environment.
GUYONNE V +1 more
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Applications in Energy and Combustion ScienceIn this study, premixed ammonia‒hydrogen‒air mixtures at different pressures (50∼300 kPa), equivalence ratios (0.7∼1.5), and hydrogen concentrations (9∼50.00 %) were centrally ignited in a closed vessel, and the propagation of a spherical flame was ...
Jun Cheng, Bo Zhang
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Study of burner geometry effects on non-premixed flame response under acoustic excitation
Journal of Low Frequency Noise, Vibration and Active Control, 2019 The study of the flame under the acoustic excitation contributes to the study of flame self-excited thermoacoustic instability. Although non-premixed combustion is widely used in industry, research on its combustion instability characteristics is ...
Hao Zhou +3 more
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International Journal of Renewable Energy Development, 2022 Since the early years of the 21st century, the whole world has faced two very urgent problems: the depletion of fossil energy sources and climate change due to environmental pollution.
Long Vuong Hoang +4 more
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Supersonic combustion instability in a hydrogen-fueled strut-based scramjet combustor
Kongqi donglixue xuebaoCombustion instability is a critical issue limiting the performance and reliability of hypersonic propulsion systems. In this study, Large Eddy Simulation (LES), Fast Fourier Transform (FFT), and Dynamic Mode Decomposition (DMD) were employed to ...
Xiaofei Niu, Qian Chen
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Experimental investigation of flame instability in a premixed combustor
Fuel, 2020 Abstract In this study; effects of fuel composition, equivalence ratio and swirl number on flame behavior (dynamic and static) of premixed 100% CNG, CNG-H2, CNG-H2-CO and CNG-H2-CO2-CO mixtures under externally altered acoustic conditions were experimentally investigated in a laboratory scale swirl stabilized combustor. During experiments, the amount
Harun Yilmaz, Omer Cam, Ilker Yilmaz
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Advanced Engineering Materials, EarlyView.Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar +7 more
wiley +1 more source