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Computational Study of Gas-Solid Flow in a Horizontal Stepped Pipeline
Joint Authors
Li, Zhengquan
Chu, Kaiwei
Pan, Renhu
Yu, Aibing
Yang, Jiaqi
Source
Mathematical Problems in Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-09-15
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
In this paper, the mechanism governing the particle-fluid flow characters in the stepped pipeline is studied by the combined discrete element method (DEM) and computational fluid dynamics (CFD) model (CFD-DEM) and the two fluid model (TFM).
The mechanisms governing the gas-solid flow in the horizontal stepped pipeline are investigated in terms of solid and gas velocity distributions, pressure drop, process performance, the gas-solid interaction forces, solid-solid interaction forces, and the solid-wall interaction forces.
The two models successfully capture the key flow features in the stepped pipeline, such as the decrease of gas velocity, solid velocity, and pressure drop, during and after the passage of gas-solid flow through the stepped section.
What is more important, the reason of the appearance of large size solid dune and pressure surge phenomena suffered in the stepped pipeline is investigated macroscopically and microscopically.
The section in which the blockage problem most likely occurs in the stepped pipeline is confirmed.
The pipe wall wearing problem, which is one of the most common and critical problems in pneumatic conveying system, is analysed and investigated in terms of interaction forces.
It is shown that the most serious pipe wall wearing problem happened in the section which is just behind the stepped part.
American Psychological Association (APA)
Li, Zhengquan& Chu, Kaiwei& Pan, Renhu& Yu, Aibing& Yang, Jiaqi. 2019. Computational Study of Gas-Solid Flow in a Horizontal Stepped Pipeline. Mathematical Problems in Engineering،Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1194807
Modern Language Association (MLA)
Li, Zhengquan…[et al.]. Computational Study of Gas-Solid Flow in a Horizontal Stepped Pipeline. Mathematical Problems in Engineering No. 2019 (2019), pp.1-15.
https://search.emarefa.net/detail/BIM-1194807
American Medical Association (AMA)
Li, Zhengquan& Chu, Kaiwei& Pan, Renhu& Yu, Aibing& Yang, Jiaqi. Computational Study of Gas-Solid Flow in a Horizontal Stepped Pipeline. Mathematical Problems in Engineering. 2019. Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1194807
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1194807