期刊
COMPUTERS & MATHEMATICS WITH APPLICATIONS
卷 121, 期 -, 页码 115-130出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.camwa.2022.07.005
关键词
Non-circular particles; Pulsation; Sedimentation; Lattice Boltzmann method; Immersed boundary method
资金
- National Natural Science Foundation of China [11601525]
- Natural Science Foundation of Hunan Province [2020114105]
- University of Bojnord [99/367/8986]
This paper investigates the falling behavior and collective behavior of non-circular particles in the presence of pulsatile flow. Numerical simulations are used to examine the effects of particle geometry, particle arrangement, and pulsatile flow on particle settling.
Equilibrium position, as well as dynamic patterns of suspended particles, plays a dominant role in particle manipulation of segregation, transporting, or sorting. The current paper aims to investigate the falling manners of non-circular particles in an enclosure while the pulsatile flow is involved as a counter-flow. The direct-forcing immersed boundary method is coupled with the lattice Boltzmann method to simulate this widespread issue numerically. Corresponding boundary conditions are hired to take into account pulsatile flow. Findings were first successfully verified against the existing literature and the accuracy of the results is well-demonstrated. For the first time, a series of proof-of-principal simulations with an increased level of geometric complexity, particle aspect ratio, as well as the number and initial configuration (release positions), is carried out. The force resulting from the particle acceleration is also considered. It is shown that considering such factors, particle settling manners would markedly differ. The collective behavior of particles is also studied, and it is revealed that the presence of neighboring particles makes the influence of the particle shape less clear; however, pulsatile flow presents considerable differences in the settling manners of particles.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据