Heat transfer from a small-size heater to a falling liquid film

O. A. Kabov, A. V. Dyatlov, I. V. Marchuk

Research output: Contribution to journalArticle

Abstract

Convective heat transfer from a heater with the height of 6.5 mm to a falling film of 25% mixture of ethyl alcohol in water is investigated experimentally. The Reynolds number varied in the experiments from 0.68 to 88.6. The heat flux density reached the value of 41 W/cm. As a result of the Marangoni effect, the modes of the steady formation of standing waves on the surface of the heater at Reynolds number varying from 0.68 to 9 were determined. The values of the heat transfer coefficient, from the heater to the liquid film obtained for two different regions of the heat flux density upon formation of large-scale structures. The results were generalized by empirical relations. The densities of the critical heat fluxes corresponding to the breakdown of the highly subcooled falling liquid film at Reynolds number from 0.68 to 9 are obtained.

Original languageEnglish
Pages (from-to)96-102
Number of pages7
JournalHeat Transfer Research
Volume30
Issue number1
Publication statusPublished - 1999

Fingerprint

Liquid films
falling
heaters
Heat flux
heat flux
Reynolds number
heat transfer
Heat transfer
liquids
flux density
convective heat transfer
heat transfer coefficients
standing waves
Heat transfer coefficients
Ethanol
ethyl alcohol
breakdown
Water
water
Experiments

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Heat transfer from a small-size heater to a falling liquid film. / Kabov, O. A.; Dyatlov, A. V.; Marchuk, I. V.

In: Heat Transfer Research, Vol. 30, No. 1, 1999, p. 96-102.

Research output: Contribution to journalArticle

Kabov, OA, Dyatlov, AV & Marchuk, IV 1999, 'Heat transfer from a small-size heater to a falling liquid film', Heat Transfer Research, vol. 30, no. 1, pp. 96-102.
Kabov, O. A. ; Dyatlov, A. V. ; Marchuk, I. V. / Heat transfer from a small-size heater to a falling liquid film. In: Heat Transfer Research. 1999 ; Vol. 30, No. 1. pp. 96-102.
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