Turbulence flow field in a four-fan stirred combustion furnace DOI

Huina Guo,

Xinde Zhang,

Z. Cen

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(4)

Published: April 1, 2025

This study comprehensively investigates the turbulence flow within a four-fan stirred combustion furnace using experimental and numerical approaches. To analyze impact of on fuel combustion, prerequisite is to accurately obtain control rules before combustion. established high-frequency sampling method hot-wire anemometer quickly test homogeneous isotropic (HIT) region employing continuous laser combined with high-speed camera achieve particle image velocimetry measurements central two-dimensional field. A steady simulation combining realizable k–ε model multiple reference frame was performed further three-dimensional The results show that adopted has high accuracy. Within spherical approximately 40 mm, field exhibited HIT characteristics, turbulent fluctuation velocity urms varying linearly fan speed ω (urms = 0.000 814 ω). Integral eddy length remains around 14 while smaller-scale Taylor Kolmogorov significantly decreased increasing ω. Full-field simulations reveal highest kinetic energy occurred at intersection adjacent flows. Additionally, explored effect 4 mm glass bead field, revealing rebound mean reduction in near bead. boundary layer thickness decreases higher but order radius 2 mm. These findings provide foundation for future research role lack

Language: Английский

Turbulence flow field in a four-fan stirred combustion furnace DOI

Huina Guo,

Xinde Zhang,

Z. Cen

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(4)

Published: April 1, 2025

This study comprehensively investigates the turbulence flow within a four-fan stirred combustion furnace using experimental and numerical approaches. To analyze impact of on fuel combustion, prerequisite is to accurately obtain control rules before combustion. established high-frequency sampling method hot-wire anemometer quickly test homogeneous isotropic (HIT) region employing continuous laser combined with high-speed camera achieve particle image velocimetry measurements central two-dimensional field. A steady simulation combining realizable k–ε model multiple reference frame was performed further three-dimensional The results show that adopted has high accuracy. Within spherical approximately 40 mm, field exhibited HIT characteristics, turbulent fluctuation velocity urms varying linearly fan speed ω (urms = 0.000 814 ω). Integral eddy length remains around 14 while smaller-scale Taylor Kolmogorov significantly decreased increasing ω. Full-field simulations reveal highest kinetic energy occurred at intersection adjacent flows. Additionally, explored effect 4 mm glass bead field, revealing rebound mean reduction in near bead. boundary layer thickness decreases higher but order radius 2 mm. These findings provide foundation for future research role lack

Language: Английский

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