NDLI: Computational research on rotating channel by a modified anisotropic turbulence model

Content Provider	Springer Nature Link
Author	Zhu, Jianqin Tao, Zhi Nie, Chaoqun
Copyright Year	2011
Abstract	Based on the simplified format of the Reynolds stress equations, a fire-new rotational-modification method for the anisotropic turbulence model has been presented. A three-dimensional Navier-Stokes code with this new rotational modified k-ω turbulence models (β=0.1 and β=1) and the standard k-ω turbulence model have been used for the prediction of flow and heat transfer characteristics in a rotating smooth square channel. The Reynolds number Re based on the inlet velocity of the cooling air and hydraulic diameter is 6000. The rotating speed are 300, 600, 900, 1200rpm respectively. The calculations results of using three turbulence models have been compared with the experimental data. The research results show that (1) the rotational modification coefficient Rf $_{13}$ used in the new anisotropic k-ω model would increased/decreased the predictions of heat transfer on the trailing surface/leading surface compared to the standard k-ω model. And this tendency would be increased with the increased β. (2) The simulation performance of the standard k-ω model was well on the leading surface. However, on the trailing surface it under-predicted the heat transfer at high rotating speed. (3) The calculation results of the new anisotropic k-ω model with β=0.1 proposed by the present paper agreed well with experimental data, both on the leading and trailing surfaces. Besides, compared to 1, 0.1 is a more appropriate magnitude of β at conditions in the present paper.
Starting Page	385
Ending Page	393
Page Count	9
File Format	PDF
ISSN	10032169
Journal	Journal of Thermal Science
Volume Number	20
Issue Number	5
e-ISSN	1993033X
Language	English
Publisher	SP Science Press
Publisher Date	2011-09-13
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	anisotropy turbulence model rotation heat transfer Classical Continuum Physics Engineering Thermodynamics, Heat and Mass Transfer Engineering Fluid Dynamics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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