Effects of Particles Collision on Separating Gas–Particle Two-Phase Turbulent Flows
Type
ArticleKAUST Department
Clean Combustion Research CenterDate
2013-10-10Online Publication Date
2013-10-10Print Publication Date
2014-03Permanent link to this record
http://hdl.handle.net/10754/594077
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A second-order moment two-phase turbulence model incorporating a particle temperature model based on the kinetic theory of granular flow is applied to investigate the effects of particles collision on separating gas–particle two-phase turbulent flows. In this model, the anisotropy of gas and solid phase two-phase Reynolds stresses and their correlation of velocity fluctuation are fully considered using a presented Reynolds stress model and the transport equation of two-phase stress correlation. Experimental measurements (Xu and Zhou in ASME-FED Summer Meeting, San Francisco, Paper FEDSM99-7909, 1999) are used to validate this model, source codes and prediction results. It showed that the particles collision leads to decrease in the intensity of gas and particle vortices and takes a larger effect on particle turbulent fluctuations. The time-averaged velocity, the fluctuation velocity of gas and particle phase considering particles colli-sion are in good agreement with experimental measurements. Particle kinetic energy is always smaller than gas phase due to energy dissipation from particle collision. Moreover, axial– axial and radial–radial fluctuation velocity correlations have stronger anisotropic behaviors. © King Fahd University of Petroleum and Minerals 2013Citation
Lv S, Yang W, Li X, Li G (2013) Effects of Particles Collision on Separating Gas–Particle Two-Phase Turbulent Flows. Arabian Journal for Science and Engineering 39: 2353–2361. Available: http://dx.doi.org/10.1007/s13369-013-0728-5.Publisher
Springer Natureae974a485f413a2113503eed53cd6c53
10.1007/s13369-013-0728-5