Flow regimes within horizontal particle-laden pipe flows
Date
2021
Authors
Zhang, X.
Nathan, G.J.
Tian, Z.F.
Chin, R.C.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
International Journal of Multiphase Flow, 2021; 143:103748-1-103748-12
Statement of Responsibility
Xinchen Zhang, Graham J. Nathan, Zhao F. Tian, Rey C. Chin
Conference Name
Abstract
This study presents numerical simulations for particle-laden gas–solid flows in horizontal circular pipes to identify the key flow regimes as a function of the main dimensionless parameters. A Euler–Lagrangian approach is employed, using direct numerical simulations (DNS) coupled with a Lagrangian particle tracking (LPT) method, to consider the drag, gravitational and lift forces on particles, as well as the effect of inter-particle collisions. The influence of the Stokes number (𝑆𝑘), mass loading ratio (𝛷𝑚) and Froude number (𝐹𝑟) on critical flow regimes is assessed to identify conditions under which gravity bias becomes either negligible or dominant with regard to fluid characteristics and particle statistics. Three different regimes of the flow behaviour are identified, depending on the combination of these dimensionless parameters. These flow regimes are described and their dependence on these three parameters (𝑆𝑘, 𝛷𝑚 and 𝐹𝑟) is reported, including the significance of gravity in generating a bias on distributions of the flow statistics.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
© 2021 Elsevier Ltd. All rights reserved.