A Nonlinear k-ε Turbulence Model Applicable to High Pressure Gradient and Large Curvature Flow
Joint Authors
Yin, Junlian
Wu, Yu-Lin
Liu, Jintao
Gu, Xiyao
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-02-17
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Most of the RANS turbulence models solve the Reynolds stress by linear hypothesis with isotropic model.
They can not capture all kinds of vortexes in the turbomachineries.
In this paper, an improved nonlinear k-ε turbulence model is proposed, which is modified from the RNG k-ε turbulence model and Wilcox's k-ω turbulence model.
The Reynolds stresses are solved by nonlinear methods.
The nonlinear k-ε turbulence model can calculate the near wall region without the use of wall functions.
The improved nonlinear k-ε turbulence model is used to simulate the flow field in a curved rectangular duct.
The results based on the improved nonlinear k-ε turbulence model agree well with the experimental results.
The calculation results prove that the nonlinear k-ε turbulence model is available for high pressure gradient flows and large curvature flows, and it can be used to capture complex vortexes in a turbomachinery.
American Psychological Association (APA)
Gu, Xiyao& Yin, Junlian& Liu, Jintao& Wu, Yu-Lin. 2014. A Nonlinear k-ε Turbulence Model Applicable to High Pressure Gradient and Large Curvature Flow. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-469451
Modern Language Association (MLA)
Gu, Xiyao…[et al.]. A Nonlinear k-ε Turbulence Model Applicable to High Pressure Gradient and Large Curvature Flow. Mathematical Problems in Engineering No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-469451
American Medical Association (AMA)
Gu, Xiyao& Yin, Junlian& Liu, Jintao& Wu, Yu-Lin. A Nonlinear k-ε Turbulence Model Applicable to High Pressure Gradient and Large Curvature Flow. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-469451
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-469451