A two-equation heat transfer model reflecting second-moment closures for wall and free turbulent flows

Abe Ken-Ichi, T. Kondoh, Y. Nagano

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

A new two-equation heat transfer model which incorporates some essential features of second-order modeling is proposed. The present model is applicable to heat transfer problems in both wall and free turbulent flows not unusually deviating from the equilibrium state. Furthermore, by introducing the Kolmogorov velocity scale, the model can appropriately express the low Reynolds number effects in the near-wall region and is also applicable to complex heat transfer fields with flow separation and reattachment. It is shown that the proposed model predicts quite successfully heat transfer in both wall and free turbulent flows; i.e., a homogeneous isotropic decaying flow, a homogeneous shear flow, a boundary-layer flow heated from the origin, and a boundary-layer flow subjected to a sudden change in the wall-heating condition; whereas, such predictions have been almost impossible with existing two-equation heat transfer models.

Original languageEnglish
Pages (from-to)228-237
Number of pages10
JournalInternational Journal of Heat and Fluid Flow
Volume17
Issue number3
DOIs
Publication statusPublished - Jun 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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