On turbulence models for rod bundle flow computations

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

In commercial computational fluid dynamics codes there is more than one turbulence model built in. It is the user responsibility to choose one of those models, suitable for the problem studied. In the last decade, several computations were presented using computational fluid dynamics for the simulation of various problems of the nuclear industry. A common feature in a number of those simulations is that they were performed using the standard k-ε turbulence model without justifying the choice of the model. The simulation results were rarely satisfactory. In this paper, we shall consider the flow in a fuel rod bundle as a case study and discuss why the application of the standard k-ε model fails to give reasonable results in this situation. We also show that a turbulence model based on the Reynolds stress transport equations can provide qualitatively correct results. Generally, our aim is pedagogical, we would like to call the readers attention to the fact that turbulence models have to be selected based on theoretical considerations and/or adequate information obtained from measurements.

Original languageEnglish
Pages (from-to)755-761
Number of pages7
JournalAnnals of Nuclear Energy
Volume32
Issue number7
DOIs
Publication statusPublished - May 2005

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Turbulence models
turbulence
Computational fluid dynamics
Nuclear industry
computational fluid dynamics
simulation
industry

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Waste Management and Disposal

Cite this

On turbulence models for rod bundle flow computations. / Házi, G.

In: Annals of Nuclear Energy, Vol. 32, No. 7, 05.2005, p. 755-761.

Research output: Contribution to journalArticle

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