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 journalArticle

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 1

Fingerprint

Ducts
Turbulent flow
Numerical analysis
Heat flux
Heat transfer
Turbulence
Pressure gradient
Flow fields
Reynolds number
Temperature

Keywords

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

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Numerical analysis of turbulent flow and heat transfer in a square sectioned U-bend duct by elliptic-blending second moment closure. / Shin, Jong Keun; Choi, Young Don; An, Jeong Soo.

In: Journal of Mechanical Science and Technology, Vol. 21, No. 2, 01.02.2007, p. 360-371.

Research output: Contribution to journalArticle

@article{2f3102b1d6cd409e9556896b2a0e455d,
title = "Numerical analysis of turbulent flow and heat transfer in a square sectioned U-bend duct by elliptic-blending second moment closure",
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.",
keywords = "Elliptic-blending model, Second moment closure, Secondary flow, Square sectioned u-bend duct flow, Turbulent heat transfer",
author = "Shin, {Jong Keun} and Choi, {Young Don} and An, {Jeong Soo}",
year = "2007",
month = "2",
day = "1",
doi = "10.1007/BF02916296",
language = "English",
volume = "21",
pages = "360--371",
journal = "Journal of Mechanical Science and Technology",
issn = "1738-494X",
publisher = "Korean Society of Mechanical Engineers",
number = "2",

}

TY - JOUR

T1 - Numerical analysis of turbulent flow and heat transfer in a square sectioned U-bend duct by elliptic-blending second moment closure

AU - Shin, Jong Keun

AU - Choi, Young Don

AU - An, Jeong Soo

PY - 2007/2/1

Y1 - 2007/2/1

N2 - 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.

AB - 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.

KW - Elliptic-blending model

KW - Second moment closure

KW - Secondary flow

KW - Square sectioned u-bend duct flow

KW - Turbulent heat transfer

UR - http://www.scopus.com/inward/record.url?scp=34250712360&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34250712360&partnerID=8YFLogxK

U2 - 10.1007/BF02916296

DO - 10.1007/BF02916296

M3 - Article

VL - 21

SP - 360

EP - 371

JO - Journal of Mechanical Science and Technology

JF - Journal of Mechanical Science and Technology

SN - 1738-494X

IS - 2

ER -