Augmentation of convective heat transfer by an effective utilization of droplet inertia

Koichi Hishida, Tatsuto Nagayasu, Masanobu Maeda

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Flow characteristics and heat transfer of a water droplets laden flow behind a backward-facing step have been experimentally and numerically investigated for the condition of isothermally heated dry wall. Two sizes of step heights were employed corresponding to ReH = 5.3 × 103, 1.1 × 104. Numerical simulations were performed by a standard κ-ε model for the gas phase and a Lagrangian stochastic model for the trajectories of droplets. The experimental and numerical results showed that large heat transfer enhancement existed downstream of the reattachment region and was correlated well with the ratio of time scale between an appropriate time scale of the turbulent flow and the relaxation time of droplet.

Original languageEnglish
Pages (from-to)1773-1785
Number of pages13
JournalInternational Journal of Heat and Mass Transfer
Volume38
Issue number10
DOIs
Publication statusPublished - 1995

Fingerprint

convective heat transfer
inertia
heat transfer
Heat transfer
backward facing steps
augmentation
flow characteristics
turbulent flow
attachment
relaxation time
trajectories
Stochastic models
vapor phases
Relaxation time
Turbulent flow
Gases
Trajectories
water
Water
simulation

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering
  • Condensed Matter Physics
  • Engineering(all)
  • Energy(all)

Cite this

Augmentation of convective heat transfer by an effective utilization of droplet inertia. / Hishida, Koichi; Nagayasu, Tatsuto; Maeda, Masanobu.

In: International Journal of Heat and Mass Transfer, Vol. 38, No. 10, 1995, p. 1773-1785.

Research output: Contribution to journalArticle

Hishida, Koichi ; Nagayasu, Tatsuto ; Maeda, Masanobu. / Augmentation of convective heat transfer by an effective utilization of droplet inertia. In: International Journal of Heat and Mass Transfer. 1995 ; Vol. 38, No. 10. pp. 1773-1785.
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