Numerical investigations of heat transfer mechanisms in the forced laminar wall jet

J. Seidel, Hermann F Fasel

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The effect of high-amplitude forcing on a laminar wall jet over a heated flat plate is analysed. Highly accurate direct numerical simulations (DNS) are used to investigate the dominant transport mechanisms. When forcing is applied, the skin friction is reduced markedly and the wall heat transfer is increased. Detailed examination of the unsteady flow field showed that the concepts of eddy viscosity and eddy thermal diffusivity, usually applied to turbulent flows, can be applied to the analysis of unsteady laminar flows to explain the effect of highly unsteady phenomena.

Original languageEnglish (US)
Pages (from-to)191-215
Number of pages25
JournalJournal of Fluid Mechanics
Volume442
DOIs
StatePublished - Sep 10 2001

Fingerprint

wall jets
Skin friction
Thermal diffusivity
Direct numerical simulation
Unsteady flow
Laminar flow
Turbulent flow
Flow fields
heat transfer
Viscosity
Heat transfer
eddy viscosity
skin friction
unsteady flow
thermal diffusivity
flat plates
direct numerical simulation
laminar flow
turbulent flow
flow distribution

ASJC Scopus subject areas

  • Mechanics of Materials
  • Computational Mechanics
  • Physics and Astronomy(all)
  • Condensed Matter Physics

Cite this

Numerical investigations of heat transfer mechanisms in the forced laminar wall jet. / Seidel, J.; Fasel, Hermann F.

In: Journal of Fluid Mechanics, Vol. 442, 10.09.2001, p. 191-215.

Research output: Contribution to journalArticle

@article{3e5d169a72324dac895a2c35e0c9e998,
title = "Numerical investigations of heat transfer mechanisms in the forced laminar wall jet",
abstract = "The effect of high-amplitude forcing on a laminar wall jet over a heated flat plate is analysed. Highly accurate direct numerical simulations (DNS) are used to investigate the dominant transport mechanisms. When forcing is applied, the skin friction is reduced markedly and the wall heat transfer is increased. Detailed examination of the unsteady flow field showed that the concepts of eddy viscosity and eddy thermal diffusivity, usually applied to turbulent flows, can be applied to the analysis of unsteady laminar flows to explain the effect of highly unsteady phenomena.",
author = "J. Seidel and Fasel, {Hermann F}",
year = "2001",
month = "9",
day = "10",
doi = "10.1017/S0022112001005079",
language = "English (US)",
volume = "442",
pages = "191--215",
journal = "Journal of Fluid Mechanics",
issn = "0022-1120",
publisher = "Cambridge University Press",

}

TY - JOUR

T1 - Numerical investigations of heat transfer mechanisms in the forced laminar wall jet

AU - Seidel, J.

AU - Fasel, Hermann F

PY - 2001/9/10

Y1 - 2001/9/10

N2 - The effect of high-amplitude forcing on a laminar wall jet over a heated flat plate is analysed. Highly accurate direct numerical simulations (DNS) are used to investigate the dominant transport mechanisms. When forcing is applied, the skin friction is reduced markedly and the wall heat transfer is increased. Detailed examination of the unsteady flow field showed that the concepts of eddy viscosity and eddy thermal diffusivity, usually applied to turbulent flows, can be applied to the analysis of unsteady laminar flows to explain the effect of highly unsteady phenomena.

AB - The effect of high-amplitude forcing on a laminar wall jet over a heated flat plate is analysed. Highly accurate direct numerical simulations (DNS) are used to investigate the dominant transport mechanisms. When forcing is applied, the skin friction is reduced markedly and the wall heat transfer is increased. Detailed examination of the unsteady flow field showed that the concepts of eddy viscosity and eddy thermal diffusivity, usually applied to turbulent flows, can be applied to the analysis of unsteady laminar flows to explain the effect of highly unsteady phenomena.

UR - http://www.scopus.com/inward/record.url?scp=0035840236&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035840236&partnerID=8YFLogxK

U2 - 10.1017/S0022112001005079

DO - 10.1017/S0022112001005079

M3 - Article

AN - SCOPUS:0035840236

VL - 442

SP - 191

EP - 215

JO - Journal of Fluid Mechanics

JF - Journal of Fluid Mechanics

SN - 0022-1120

ER -