Numerical analysis of turbulent flow and heat transfer in a square sectioned U-bend duct by elliptic-blending second moment closure

Jong Keun Shin, Young Don Choi, Jeong Soo An

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A second moment turbulence closure using the elliptic-blending equation is introduced to analyze the turbulence and heat transfer in a square sectioned U-bend duct flow. The turbulent heat flux model based on the elliptic concept satisfies the near-wall balance between viscous diffusion, viscous dissipation and temperature-pressure gradient correlation, and also has the characteristics of approaching its respective conventional high Reynolds number model far away from the wall. Also, the traditional GGDH heat flux model is compared with the present elliptic concept-based heat flux model. The turbulent heat flux models are closely linked to the ellipticblending second moment closure which is used for the prediction of Reynolds stresses. The predicted results show their reasonable agreement with experimental data for a square sectioned U-bend duct flow field adopted in the present study.

Original languageEnglish
Pages (from-to)360-371
Number of pages12
JournalJournal of Mechanical Science and Technology
Volume21
Issue number2
DOIs
Publication statusPublished - 2007 Feb

Keywords

  • Elliptic-blending model
  • Second moment closure
  • Secondary flow
  • Square sectioned u-bend duct flow
  • Turbulent heat transfer

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Numerical analysis of turbulent flow and heat transfer in a square sectioned U-bend duct by elliptic-blending second moment closure'. Together they form a unique fingerprint.

Cite this