SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 58 ›› Issue (6): 29-39.DOI: 10.1016/j.cjche.2022.10.002

• Full Length Article • 上一篇    下一篇

Analysis of particle dispersion in a turbulent flow considering particle rotation

Wenshi Huang1, Yang Zhang1, Yuxin Wu1, Jingyu Wang1, Minmin Zhou2   

  1. 1. Department of Energy and Power Engineering, International Joint Laboratory on Low Carbon Clean Energy Innovation, Tsinghua University, Beijing 100084, China;
    2. Department of Chemical Engineering, University of Utah, UT 84108, USA
  • 收稿日期:2022-07-23 修回日期:2022-09-30 出版日期:2023-06-28 发布日期:2023-08-31
  • 通讯作者: Yuxin Wu,E-mail:wuyx09@mail.tsinghua.edu.cn
  • 基金资助:
    This work has been supported by National Science and Technology Major Project of China(2019-I-0022-0021), Seed fund of Shanxi Research Institute for Clean Energy, Tsinghua University, and the National Natural Science Foundation of China (51761125011).

Analysis of particle dispersion in a turbulent flow considering particle rotation

Wenshi Huang1, Yang Zhang1, Yuxin Wu1, Jingyu Wang1, Minmin Zhou2   

  1. 1. Department of Energy and Power Engineering, International Joint Laboratory on Low Carbon Clean Energy Innovation, Tsinghua University, Beijing 100084, China;
    2. Department of Chemical Engineering, University of Utah, UT 84108, USA
  • Received:2022-07-23 Revised:2022-09-30 Online:2023-06-28 Published:2023-08-31
  • Contact: Yuxin Wu,E-mail:wuyx09@mail.tsinghua.edu.cn
  • Supported by:
    This work has been supported by National Science and Technology Major Project of China(2019-I-0022-0021), Seed fund of Shanxi Research Institute for Clean Energy, Tsinghua University, and the National Natural Science Foundation of China (51761125011).

摘要: Non-spherical particles exist widely in natural and industrial fluid systems and the motions of non-spherical particles are significantly different from that of spherical particles. In this paper, a simplified model of non-spherical particles considering particle drag correction, lift, and rotation was established. Based on the Eulerian-Lagrangian simulation, the dispersion characteristics of spherical and non-spherical particles with different Stokes numbers in a high-speed turbulent jet were analyzed and compared considering the effect of particle rotation. The results show that, the differences in particle dispersion and radial velocity fluctuation between non-spherical particles and spherical particles in the jet are significant, especially when Stokes number is large. Moreover, the effects of different type of forces on the dispersion of non-spherical particles and spherical particles were compared in detail, which revealed that the change of the Magnus force caused by the increase in the angular velocity of non-spherical particles plays a dominant role in the differences of particle dispersion.

关键词: Dispersion, Particle, Particle-laden flows, Particle rotation, Turbulent flow

Abstract: Non-spherical particles exist widely in natural and industrial fluid systems and the motions of non-spherical particles are significantly different from that of spherical particles. In this paper, a simplified model of non-spherical particles considering particle drag correction, lift, and rotation was established. Based on the Eulerian-Lagrangian simulation, the dispersion characteristics of spherical and non-spherical particles with different Stokes numbers in a high-speed turbulent jet were analyzed and compared considering the effect of particle rotation. The results show that, the differences in particle dispersion and radial velocity fluctuation between non-spherical particles and spherical particles in the jet are significant, especially when Stokes number is large. Moreover, the effects of different type of forces on the dispersion of non-spherical particles and spherical particles were compared in detail, which revealed that the change of the Magnus force caused by the increase in the angular velocity of non-spherical particles plays a dominant role in the differences of particle dispersion.

Key words: Dispersion, Particle, Particle-laden flows, Particle rotation, Turbulent flow