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https://hdl.handle.net/2440/64605
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Type: | Journal article |
Title: | Numerical investigation into the effects of wall roughness on a gas-particle flow in a 90° bend |
Other Titles: | Numerical investigation into the effects of wall roughness on a gas-particle flow in a 90-degree bend |
Author: | Tian, Z. Inthavong, K. Tu, J. Yeoh, G. |
Citation: | International Journal of Heat and Mass Transfer, 2008; 51(5-6):1238-1250 |
Publisher: | Pergamon-Elsevier Science Ltd |
Issue Date: | 2008 |
ISSN: | 0017-9310 1879-2189 |
Statement of Responsibility: | Z.F. Tian, K. Inthavong, J.Y. Tu, G.H. Yeoh |
Abstract: | This paper presents a numerical study of a dilute gas–particle flow in a 90° bend by employing a Lagrangian particle-tracking model combined with a particle–wall collision model and a stochastic wall roughness model. The major objective of this study was to investigate the effects of wall roughness on the particle flow properties. The numerical simulation revealed that wall roughness significantly reduced the ‘particle free zone’ and smoothed the particle number density profiles by altering the particle rebounding behaviours. It was also found that wall roughness reduced the particle mean velocities and also increased the particle fluctuating velocities in both streamwise and transverse directions. |
Keywords: | Gas–particle flow 90° bend CFD Particle–wall collision Wall roughness |
Rights: | © 2007 Elsevier Ltd. All rights reserved. |
DOI: | 10.1016/j.ijheatmasstransfer.2007.12.005 |
Published version: | http://dx.doi.org/10.1016/j.ijheatmasstransfer.2007.12.005 |
Appears in Collections: | Aurora harvest 5 Mechanical Engineering publications |
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