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Direct Numerical Simulation of Particle-Laden Swirling Flows on Turbulence Modulation
Joint Authors
Gui, Nan
Yan, Jie
Gao, Jinsen
Xie, Gong-Nan
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-05-25
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The modulation of turbulence by the laden particles in swirling flows is studied via direct numerical simulation.
The statistical characteristics of turbulence modulation are investigated in detail under the effects of different mass loadings as well as Stokes numbers.
It is found that the characteristics of turbulence modulation for different Stokes numbers are very similar to each other when the mass loading is light.
As the mass loading increases, small particles seem to modulate turbulence more rapidly than large particles.
The number concentration or the number flow rate of particles plays an important role in modulation of turbulence.
It induces the preferential attenuation of turbulence for small particles in the near field region.
Moreover, the trends of modulation of the axial/azimuthal fluctuations, the turbulent kinetic energy, and the Reynolds stress tenor as well as its invariants are similar in the near field region.
However, when the turbulence is decayed sufficiently in the downstream region, the inverse turbulence modulation may occur especially for the regions with local intensive accumulation of small particles.
American Psychological Association (APA)
Yan, Jie& Gui, Nan& Xie, Gong-Nan& Gao, Jinsen. 2014. Direct Numerical Simulation of Particle-Laden Swirling Flows on Turbulence Modulation. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-458007
Modern Language Association (MLA)
Yan, Jie…[et al.]. Direct Numerical Simulation of Particle-Laden Swirling Flows on Turbulence Modulation. Mathematical Problems in Engineering No. 2014 (2014), pp.1-12.
https://search.emarefa.net/detail/BIM-458007
American Medical Association (AMA)
Yan, Jie& Gui, Nan& Xie, Gong-Nan& Gao, Jinsen. Direct Numerical Simulation of Particle-Laden Swirling Flows on Turbulence Modulation. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-458007
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-458007