Computation of wall heat transfer in pipe-expansion flows with/without swirl

Keh-Chin Chang, Wen Der Hsieh

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Computation of wall heat transfer in pipe-expansion flows with/without swirl motion is implemented using a new tow-layer (hybrid) turbulence model which is composed of a Reynolds stress model (RSM) and a Low-Reynolds-number (LRN) k - ε model. Comparisons of the predicted distributions of the Nusselt number along the wall with the available experimental results reveal that this two-layer turbulence model yields satisfactory performances in the three test cases. It is also shown that appreciable superiority of this two-layer turbulence model over a pure LRN k - ε model is observed when the investigated flow becomes more complex (anisotropic) such as the recirculating swirling flow case.

Original languageEnglish
Pages (from-to)131-138
Number of pages8
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Volume357
Issue number2
Publication statusPublished - 1998

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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