Compressibility factor effect on the turbulence heat transfer of super-critical carbon dioxide by an elliptic-blending second moment closure

Han Seong Ho, Choi Young Don, Seo Jeong Sik, Shin Jung Kun

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The present contribution describes the application of elliptic-blending second moment closure to predict the gas cooling process of turbulent super-critical carbon dioxide flow in a square cross-sectioned duct. The gas cooling process under super-critical state experiences a drastic change in thermodynamic and transport properties. Redistributive terms in the Reynolds stress and turbulent heat flux equations are modeled by an elliptic-blending second moment closure in order to represent strongly non-homogeneous effects produced by the presence of walls. The main feature of Durbin's elliptic relaxation second moment closure that accounts for the nonlocal character of pressure-velocity gradient correlation and the near-wall inhomogeneity guaranteed by the elliptic blending second moment closure.

Original languageEnglish
Pages (from-to)40-50
Number of pages11
JournalTransactions of the Korean Society of Mechanical Engineers, B
Volume31
Issue number1
Publication statusPublished - 2007 Jan

Keywords

  • Carbon dioxide
  • Compressibility factor
  • Elliptic blending model
  • Super critical-point
  • Thermal expansion coefficient

ASJC Scopus subject areas

  • Mechanical Engineering

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