Experimental investigation of heat transfer in a rivulet on the inclined foil

V. V. Cheverda, I. V. Marchuk, A. L. Karchevsky, E. V. Orlik, O. A. Kabov

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Heat transfer at rivulet water flow over the constantan foil with the length of 80 mm, width of 35 mm, and thickness of 25 mm was studied experimentally. The foil surface temperature was measured by an IR-scanner. Distributions of heat flux density on the surface of the foil, where the liquid flowed, were obtained. To determine the heat flux density from the foil to liquid near the contact line, the Cauchy problem was solved for the stationary heat equation using the thermographic data. Calculation results showed that the maximal heat flux occurs in the area of the contact line and exceeds the average heat flux from the entire foil surface by several times. This is explained by the influx of heat from the periphery of foil to the rivulet due to the relatively high value of heat conductivity coefficient of the foil material and high evaporation rate in the region of the contact line.

Original languageEnglish
Pages (from-to)415-420
Number of pages6
JournalThermophysics and Aeromechanics
Volume23
Issue number3
DOIs
Publication statusPublished - 1 May 2016

Keywords

  • contact wetting line
  • liquid rivulet
  • local heating

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Radiation

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