Anisotropic Characteristics of Turbulence Dissipation in Swirling Flow: A Direct Numerical Simulation Study

المؤلفون المشاركون

Gui, Nan
Yang, Xingtuan
Tu, Jiyuan
Jiang, Shengyao
Yan, Jie
Xie, Gong-Nan

المصدر

Advances in Mathematical Physics

العدد

المجلد 2015، العدد 2015 (31 ديسمبر/كانون الأول 2015)، ص ص. 1-9، 9ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2015-03-02

دولة النشر

مصر

عدد الصفحات

9

التخصصات الرئيسية

الفيزياء

الملخص 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.

نمط استشهاد جمعية علماء النفس الأمريكية (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

نمط استشهاد الجمعية الأمريكية للغات الحديثة (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

نمط استشهاد الجمعية الطبية الأمريكية (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

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-1053011