Eulerian-Lagranigan simulation of aerosol evolution in turbulent mixing layer

doi:10.1007/s10483-016-2134-9

Applied Mathematics and Mechanics (English Edition) ›› 2016, Vol. 37 ›› Issue (10): 1305-1314.doi: https://doi.org/10.1007/s10483-016-2134-9

Eulerian-Lagranigan simulation of aerosol evolution in turbulent mixing layer

Kun ZHOU^1,2, Xiao JIANG¹, Ke SUN¹, Zhu HE¹

1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;
2. Clean Combustion Research Center, King Abdullah University of Science and Technology, Thuwal 23955, Kingdom of Saudi Arabia

收稿日期:2016-01-26 修回日期:2016-03-30 出版日期:2016-10-01 发布日期:2016-10-01
通讯作者: Kun ZHOU E-mail:zhou.kun@wust.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Nos.11402179 and 11572274)

Eulerian-Lagranigan simulation of aerosol evolution in turbulent mixing layer

Kun ZHOU^1,2, Xiao JIANG¹, Ke SUN¹, Zhu HE¹

1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;
2. Clean Combustion Research Center, King Abdullah University of Science and Technology, Thuwal 23955, Kingdom of Saudi Arabia

Received:2016-01-26 Revised:2016-03-30 Online:2016-10-01 Published:2016-10-01
Supported by:
Project supported by the National Natural Science Foundation of China (Nos.11402179 and 11572274)

摘要/Abstract

摘要：

The formation and evolution of aerosol in turbulent flows are ubiquitous in both industrial processes and nature. The intricate interaction of turbulent mixing and aerosol evolution in a canonical turbulent mixing layer was investigated by a direct numerical simulation (DNS) in a recent study (Zhou, K., Attili, A., Alshaarawi, A., and Bisetti, F. Simulation of aerosol nucleation and growth in a turbulent mixing layer. Physics of Fluids, 26, 065106 (2014)). In this work, Monte Carlo (MC) simulation of aerosol evolution is carried out along Lagrangian trajectories obtained in the previous simulation, in order to quantify the error of the moment method used in the previous simulation. Moreover, the particle size distribution (PSD), not available in the previous works, is also investigated. Along a fluid parcel moving through the turbulent flow, temperature and vapor concentration exhibit complex fluctuations, triggering complicate aerosol processes and rendering complex PSD. However, the mean PSD is found to be bi-modal in most of the mixing layer except that a tri-modal distribution is found in the turbulent transition region. The simulated PSDs agree with the experiment observations available in the literature. A different explanation on the formation of such PSDs is provided.

关键词: turbulent mixing layer, Monte Carlo (MC) simulation, aerosol dynamics

Abstract:

Key words: Monte Carlo (MC) simulation, turbulent mixing layer, aerosol dynamics

中图分类号:

76F25
76T15

Kun ZHOU, Xiao JIANG, Ke SUN, Zhu HE. Eulerian-Lagranigan simulation of aerosol evolution in turbulent mixing layer[J]. Applied Mathematics and Mechanics (English Edition), 2016, 37(10): 1305-1314.

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Eulerian-Lagranigan simulation of aerosol evolution in turbulent mixing layer

Eulerian-Lagranigan simulation of aerosol evolution in turbulent mixing layer

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