Large-Eddy Simulation of Particle-Laden Turbulent Flows over a Backward-Facing Step Considering Two-Phase Two-Way Coupling
Joint Authors
Wang, Bing
Hui Qiang, Zhang
Xi Lin, Wang
Source
Advances in Mechanical Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-05-16
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Particle-laden turbulent flows over a backward-facing step were here numerically studied by means of a large-eddy simulation considering two-way coupling between particle and fluid phases.
The modification of turbulence by particles was then analyzed based on the predicted results of mean and fluctuating velocities.
The influencing factors of particle size and material density were also evaluated.
Turbulence modifications are anisotropic and closely dependent on flow status.
Stronger modulations were observed in the up-wall shear flow regions.
Fluid laden with smaller size, low-density particles showed enhancement of turbulence in the streamwise direction, but this effect was less pronounced in the case of larger low-density particles.
Particle dispersions were also investigated for comparison of particle instantaneous distributions in coherent structures.
Particle modulations of turbulence were not found to change particle preferential distributions.
The conclusions drawn in the present study were useful for further understanding of a two-phase turbulence physical mechanism and establishment of accurate prediction models for engineering applications.
American Psychological Association (APA)
Wang, Bing& Hui Qiang, Zhang& Xi Lin, Wang. 2013. Large-Eddy Simulation of Particle-Laden Turbulent Flows over a Backward-Facing Step Considering Two-Phase Two-Way Coupling. Advances in Mechanical Engineering،Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-463609
Modern Language Association (MLA)
Wang, Bing…[et al.]. Large-Eddy Simulation of Particle-Laden Turbulent Flows over a Backward-Facing Step Considering Two-Phase Two-Way Coupling. Advances in Mechanical Engineering No. 2013 (2013), pp.1-11.
https://search.emarefa.net/detail/BIM-463609
American Medical Association (AMA)
Wang, Bing& Hui Qiang, Zhang& Xi Lin, Wang. Large-Eddy Simulation of Particle-Laden Turbulent Flows over a Backward-Facing Step Considering Two-Phase Two-Way Coupling. Advances in Mechanical Engineering. 2013. Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-463609
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-463609