Laminar forced convective heat transfer in helical pipe flow

Anup Kumer Datta, Shinichiro Yanase, Toshinori Kouchi, Mohammed M.E. Shatat

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Laminar forced convective heat transfer in a helical pipe with circular cross section subjected to wall heating was investigated numerically by three-dimensional (3D) direct numerical simulations (DNS) comparing with the experimental data obtained by Shatat (2010). The study was performed for three Prandtl numbers, Pr = 8.5, 7.5 and 4.02, over the wide range of torsion. In 3D steady calculations, we found the appearance of fully-developed axially invariant flow regions, where the averaged Nusselt number (averaged over the peripheral of the pipe cross section) were calculated, being in good agreement with the experimental data. Because of the effect of torsion on the heat transfer characteristics, the averaged Nusselt number exhibits repetition of decrease and increases as torsion increases from zero for all Reynolds numbers. It was found that there exists two maximums and two minimums of the averaged Nusselt number. It is interesting that the global minimum of the Nusselt number occurs at β≅0.1 and the global maximum at β≅0.55.

Original languageEnglish
Pages (from-to)41-49
Number of pages9
JournalInternational Journal of Thermal Sciences
Volume120
DOIs
Publication statusPublished - Oct 1 2017

Fingerprint

pipe flow
convective heat transfer
Pipe flow
Nusselt number
Torsional stress
Heat transfer
torsion
Pipe
cross sections
Prandtl number
Direct numerical simulation
direct numerical simulation
repetition
Reynolds number
heat transfer
Heating
heating

Keywords

  • DNS
  • Forced convective heat transfer
  • Helical pipe
  • Prandtl number
  • Torsion

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering(all)

Cite this

Laminar forced convective heat transfer in helical pipe flow. / Datta, Anup Kumer; Yanase, Shinichiro; Kouchi, Toshinori; Shatat, Mohammed M.E.

In: International Journal of Thermal Sciences, Vol. 120, 01.10.2017, p. 41-49.

Research output: Contribution to journalArticle

@article{cf0a6d14e65645cab24ae94918c6cd68,
title = "Laminar forced convective heat transfer in helical pipe flow",
abstract = "Laminar forced convective heat transfer in a helical pipe with circular cross section subjected to wall heating was investigated numerically by three-dimensional (3D) direct numerical simulations (DNS) comparing with the experimental data obtained by Shatat (2010). The study was performed for three Prandtl numbers, Pr = 8.5, 7.5 and 4.02, over the wide range of torsion. In 3D steady calculations, we found the appearance of fully-developed axially invariant flow regions, where the averaged Nusselt number (averaged over the peripheral of the pipe cross section) were calculated, being in good agreement with the experimental data. Because of the effect of torsion on the heat transfer characteristics, the averaged Nusselt number exhibits repetition of decrease and increases as torsion increases from zero for all Reynolds numbers. It was found that there exists two maximums and two minimums of the averaged Nusselt number. It is interesting that the global minimum of the Nusselt number occurs at β≅0.1 and the global maximum at β≅0.55.",
keywords = "DNS, Forced convective heat transfer, Helical pipe, Prandtl number, Torsion",
author = "Datta, {Anup Kumer} and Shinichiro Yanase and Toshinori Kouchi and Shatat, {Mohammed M.E.}",
year = "2017",
month = "10",
day = "1",
doi = "10.1016/j.ijthermalsci.2017.05.026",
language = "English",
volume = "120",
pages = "41--49",
journal = "International Journal of Thermal Sciences",
issn = "1290-0729",
publisher = "Elsevier Masson SAS",

}

TY - JOUR

T1 - Laminar forced convective heat transfer in helical pipe flow

AU - Datta, Anup Kumer

AU - Yanase, Shinichiro

AU - Kouchi, Toshinori

AU - Shatat, Mohammed M.E.

PY - 2017/10/1

Y1 - 2017/10/1

N2 - Laminar forced convective heat transfer in a helical pipe with circular cross section subjected to wall heating was investigated numerically by three-dimensional (3D) direct numerical simulations (DNS) comparing with the experimental data obtained by Shatat (2010). The study was performed for three Prandtl numbers, Pr = 8.5, 7.5 and 4.02, over the wide range of torsion. In 3D steady calculations, we found the appearance of fully-developed axially invariant flow regions, where the averaged Nusselt number (averaged over the peripheral of the pipe cross section) were calculated, being in good agreement with the experimental data. Because of the effect of torsion on the heat transfer characteristics, the averaged Nusselt number exhibits repetition of decrease and increases as torsion increases from zero for all Reynolds numbers. It was found that there exists two maximums and two minimums of the averaged Nusselt number. It is interesting that the global minimum of the Nusselt number occurs at β≅0.1 and the global maximum at β≅0.55.

AB - Laminar forced convective heat transfer in a helical pipe with circular cross section subjected to wall heating was investigated numerically by three-dimensional (3D) direct numerical simulations (DNS) comparing with the experimental data obtained by Shatat (2010). The study was performed for three Prandtl numbers, Pr = 8.5, 7.5 and 4.02, over the wide range of torsion. In 3D steady calculations, we found the appearance of fully-developed axially invariant flow regions, where the averaged Nusselt number (averaged over the peripheral of the pipe cross section) were calculated, being in good agreement with the experimental data. Because of the effect of torsion on the heat transfer characteristics, the averaged Nusselt number exhibits repetition of decrease and increases as torsion increases from zero for all Reynolds numbers. It was found that there exists two maximums and two minimums of the averaged Nusselt number. It is interesting that the global minimum of the Nusselt number occurs at β≅0.1 and the global maximum at β≅0.55.

KW - DNS

KW - Forced convective heat transfer

KW - Helical pipe

KW - Prandtl number

KW - Torsion

UR - http://www.scopus.com/inward/record.url?scp=85020287374&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85020287374&partnerID=8YFLogxK

U2 - 10.1016/j.ijthermalsci.2017.05.026

DO - 10.1016/j.ijthermalsci.2017.05.026

M3 - Article

VL - 120

SP - 41

EP - 49

JO - International Journal of Thermal Sciences

JF - International Journal of Thermal Sciences

SN - 1290-0729

ER -