Particle transport behavior in air channel flow with multi-group Lagrangian tracking

doi:10.1088/1674-1056/26/1/014702

Abstract The particle motions of dispersion and transport in air channel flow are investigated using a large eddy simulation (LES) and Lagrangian trajectory method. The mean and fluctuating velocities of the fluids and particles are obtained, and the results are in good agreement with the data in the literature. Particle clustering is observed in the near-wall and low-speed regions. To reveal the evolution process and mechanism of particle dispersion and transport in the turbulent boundary layer, a multi-group Lagrangian tracking is applied when the two-phase flow has become fully developed:the fluid fields are classified into four sub-regions based on the flow characteristics, and particles in the turbulent region are divided accordingly into four groups when the gas-particle flow is fully developed. The spatiotemporal transport of the four groups of particles is then tracked and analyzed. The detailed relationship between particle dispersion and turbulent motion is investigated and discussed.

Keywords: particle-laden flows channel flow large-eddy simulations coherent structures

Received: 30 June 2016
Revised: 18 August 2016
Accepted manuscript online:

PACS:	47.55.Kf	(Particle-laden flows)
	47.27.nd	(Channel flow)
	47.27.ep	(Large-eddy simulations)
	47.27.De	(Coherent structures)

Fund: Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 11132005) and the National Natural Science Foundation of China (Grant No. 50876053).

Corresponding Authors: Wen-Jun Zhao
E-mail: zhaowenjunhku@gmail.com

Cite this article:

Hao Lu(卢浩), Wen-Jun Zhao(赵文君), Hui-Qiang Zhang(张会强), Bing Wang(王兵), Xi-Lin Wang(王希麟) Particle transport behavior in air channel flow with multi-group Lagrangian tracking 2017 Chin. Phys. B 26 014702

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