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

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

中国物理B ›› 2017, Vol. 26 ›› Issue (1): 14702-014702.doi: 10.1088/1674-1056/26/1/014702

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

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

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)

1. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;
2. Faculty of Architecture, The University of Hong Kong, Hong Kong, China

收稿日期:2016-06-30 修回日期:2016-08-18 出版日期:2017-01-05 发布日期:2017-01-05
通讯作者: Wen-Jun Zhao E-mail:zhaowenjunhku@gmail.com
基金资助:
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).

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

Hao Lu(卢浩)¹, Wen-Jun Zhao(赵文君)², Hui-Qiang Zhang(张会强)¹, Bing Wang(王兵)¹, Xi-Lin Wang(王希麟)¹

1. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;
2. Faculty of Architecture, The University of Hong Kong, Hong Kong, China

Received:2016-06-30 Revised:2016-08-18 Online:2017-01-05 Published:2017-01-05
Contact: Wen-Jun Zhao E-mail:zhaowenjunhku@gmail.com
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: particle-laden flows, channel flow, large-eddy simulations, coherent structures

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.

Key words: particle-laden flows, channel flow, large-eddy simulations, coherent structures

中图分类号: (Particle-laden flows)

47.55.Kf

47.27.nd (Channel flow) 47.27.ep (Large-eddy simulations) 47.27.De (Coherent structures)

卢浩, 赵文君, 张会强, 王兵, 王希麟. Particle transport behavior in air channel flow with multi-group Lagrangian tracking[J]. 中国物理B, 2017, 26(1): 14702-014702.

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[J]. Chin. Phys. B, 2017, 26(1): 14702-014702.

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

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

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