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Journal of Applied Sciences
  Year: 2007 | Volume: 7 | Issue: 1 | Page No.: 121-126
DOI: 10.3923/jas.2007.121.126
 
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A Comparative Assessment of Turbulence Models for Axisymmetric Confined Jet With Back Pressure

Hooman Hajikandi and Abbas Mansoori

Abstract:
The families of K-ε and K-ω turbulence models are performed for axisymmetric confined jets with back pressure and the results are compared with the experimental data. The physical model which is used as a source to evaluate the numerical results consists of a sudden pipe expansion, with an Expansion Ratio (ER) of 3.675. the results show that the realizable K-ε model and RNG K-ε model give a better prediction of the confined jet spreading rate, while the standard K-ε and the family of K-ω models end in overestimate approximations. However, some models have local superiority to the others, in special zones of the flow or give a better prediction of a class of flow parameters or flow characteristics. So, the authors ignore setting forth a special turbulence model for general implementation in numerical calculations for confined jets, but point out the efficiencies and deficiencies of each model.
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How to cite this article:

Hooman Hajikandi and Abbas Mansoori, 2007. A Comparative Assessment of Turbulence Models for Axisymmetric Confined Jet With Back Pressure. Journal of Applied Sciences, 7: 121-126.

DOI: 10.3923/jas.2007.121.126

URL: https://scialert.net/abstract/?doi=jas.2007.121.126

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