An Euler-Euler two-fluid model based on the second-order-moment closure approach and the granular kinetic theory of dense gas-particle flows was presented. Anisotropy of gas-solid two-phase stress and the interaction between two-phase stresses are fully considered by two-phase Reynolds stress model and the transport equation of two-phase stress correlation. Under the microgravity space environments, hydrodynamic characters and particle dispersion behaviors of dense gas-particle turbulence flows are numerically simulated. Simulation results of particle concentration and particle velocity are in good agreement with measurement data under earth gravity environment. Decreased gravity can decrease the particle dispersion and can weaken the particle-particle collision as well as it is in favor of producing isotropic flow structures. Moreover, axial-axial fluctuation velocity correlation of gas and particle in earth gravity is approximately 3.0 times greater than those of microgravity and it is smaller than axial particle velocity fluctuation due to larger particle inertia and the larger particle turbulence diffusions.
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ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels
August 1–5, 2010
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4948-4
PROCEEDINGS PAPER
Numerical Simulation of Particle Dispersion Behavior Under the Reduced Gravity Conditions Available to Purchase
Xue Liu,
Xue Liu
Harbin Power System Engineering and Research Institute, Harbin, Heilongjiang, China
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Guohui Li,
Guohui Li
Dalian Jiaotong University, Dalian, Liaoning, China
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Yang Liu
Yang Liu
Dalian Maritime University, Dalian, Liaoning, China
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Xue Liu
Harbin Power System Engineering and Research Institute, Harbin, Heilongjiang, China
Guohui Li
Dalian Jiaotong University, Dalian, Liaoning, China
Yang Liu
Dalian Maritime University, Dalian, Liaoning, China
Paper No:
FEDSM-ICNMM2010-30014, pp. 947-955; 9 pages
Published Online:
March 1, 2011
Citation
Liu, X, Li, G, & Liu, Y. "Numerical Simulation of Particle Dispersion Behavior Under the Reduced Gravity Conditions." Proceedings of the ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C. Montreal, Quebec, Canada. August 1–5, 2010. pp. 947-955. ASME. https://doi.org/10.1115/FEDSM-ICNMM2010-30014
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