Anisotropic Characteristics of Turbulence Dissipation in Swirling Flow: A Direct Numerical Simulation Study
Joint Authors
Gui, Nan
Yang, Xingtuan
Tu, Jiyuan
Jiang, Shengyao
Yan, Jie
Xie, Gong-Nan
Source
Advances in Mathematical Physics
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-02
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
This study investigates the anisotropic characteristics of turbulent energy dissipation rate in a rotating jet flow via direct numerical simulation.
The turbulent energy dissipation tensor, including its eigenvalues in the swirling flows with different rotating velocities, is analyzed to investigate the anisotropic characteristics of turbulence and dissipation.
In addition, the probability density function of the eigenvalues of turbulence dissipation tensor is presented.
The isotropic subrange of PDF always exists in swirling flows relevant to small-scale vortex structure.
Thus, with remarkable large-scale vortex breakdown, the isotropic subrange of PDF is reduced in strongly swirling flows, and anisotropic energy dissipation is proven to exist in the core region of the vortex breakdown.
More specifically, strong anisotropic turbulence dissipation occurs concentratively in the vortex breakdown region, whereas nearly isotropic turbulence dissipation occurs dispersively in the peripheral region of the strong swirling flows.
American Psychological Association (APA)
Yang, Xingtuan& Gui, Nan& Xie, Gong-Nan& Yan, Jie& Tu, Jiyuan& Jiang, Shengyao. 2015. Anisotropic Characteristics of Turbulence Dissipation in Swirling Flow: A Direct Numerical Simulation Study. Advances in Mathematical Physics،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1053011
Modern Language Association (MLA)
Yang, Xingtuan…[et al.]. Anisotropic Characteristics of Turbulence Dissipation in Swirling Flow: A Direct Numerical Simulation Study. Advances in Mathematical Physics No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1053011
American Medical Association (AMA)
Yang, Xingtuan& Gui, Nan& Xie, Gong-Nan& Yan, Jie& Tu, Jiyuan& Jiang, Shengyao. Anisotropic Characteristics of Turbulence Dissipation in Swirling Flow: A Direct Numerical Simulation Study. Advances in Mathematical Physics. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1053011
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1053011