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Turbulence Modelling of Strongly Swirling Flows

  • L. K. Yeh
  • C. A. Lin
Conference paper

Abstract

A two-dimensional swirling flow is considerably more complicated than two- dimensional plane flows, for additional strains arise due to the azimuthal motion, requiring the solution for azimuthal momentum. Swirl introduces intense azimuthal streamline curvature and hence curvature-turbulence interaction affects all six independent stress components. Therefore, the natural route is to apply Second-Moment Closures in predicting the Swirling flows. However, this is expensive computationally. One alternative is to adopt a non-linear stress and strain relationship of the Reynolds stresses.This can be achieved by assuming that the Reynolds stresses are taken to be non-linear function of the mean velocity gradients. The present study aims at investigating the capability of variants of non-linear eddy viscosity models on strongly swirling flows.

Keywords

Computational Fluid Dynamics Reynolds Stress Tangential Velocity Swirl Number Axial Velocity Distribution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

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    T. B. Gatski and C. G. Speziale: Journal of Fluid Mechanics 254, 59 (1993).MathSciNetADSMATHCrossRefGoogle Scholar
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    R. M. C. So, S. A. Ahmed and H. C. Mongia: NASA CR-3832 (1984)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • L. K. Yeh
    • 1
  • C. A. Lin
    • 1
  1. 1.Department of Power Mechanical EngineeringNational Tsing Hua UniversityHsinchuTaiwan

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