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A two-equation turbulence model and its application to a buoyant diffusion flame

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Author

  • Zhenghua Yan
  • Göran Holmstedt

Summary, in English

A modified k–ε two-equation turbulence model was developed to improve the consideration of the important buoyancy effect on turbulence and turbulent transport, which is a serious deficiency of the standard buoyancy-modified k–ε model. The present model was tested against both plane and axisymmetric thermal plumes and a buoyant diffusion flame. The model was found to be stable, computationally economic, promising and applicable to complex situations. The predicted plume spreading rates and velocity and temperature profiles agreed well with experimental measurements. When compared with the standard buoyancy-modified k–ε turbulence model, this model gives significantly improved numerical results.

Publishing year

1999

Language

English

Pages

1305-1315

Publication/Series

International Journal of Heat and Mass Transfer

Volume

42

Issue

7

Document type

Journal article

Publisher

Pergamon Press Ltd.

Topic

  • Energy Engineering
  • Building Technologies

Status

Published

ISBN/ISSN/Other

  • ISSN: 0017-9310