Heat flux density in the region of droplet contact line on a horizontal surface of a thin heated foil

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Heat flux density in the region of droplet contact line on a horizontal surface of a thin heated foil. / Cheverda, V. V.; Karchevsky, A. L.; Marchuk, I. V. и др.

в: Thermophysics and Aeromechanics, Том 24, № 5, 01.09.2017, стр. 803-806.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{68cf909a320748348c7892acc41abecf,

title = "Heat flux density in the region of droplet contact line on a horizontal surface of a thin heated foil",

abstract = "The evaporating water droplets on a horizontal heated substrate were experimentally studied. The constantan foil 25 μm thick with a size of 42×35 mm2 was used as a substrate. The experiments were carried out with a single droplet or with an ensemble of two or three droplets on the foil. The temperature of the lower surface of foil was measured by an IR scanner. To determine the heat flux density at evaporation of liquid near the contact line, the Cauchy problem for the heat conduction equation was solved using the thermographic data. The results of calculations showed that the maximal heat flux density takes place in the region of the contact line and exceeds the average heat flux density from the entire surface of foil. This is explained by the heat inflow from the foil periphery to the droplet due to relatively high value of the coefficient of heat conductivity of the foil material and high evaporation intensity in the contact line region.",

keywords = "liquid droplet, local heating, wetting contact line, BUBBLE",

author = "Cheverda, {V. V.} and Karchevsky, {A. L.} and Marchuk, {I. V.} and Kabov, {O. A.}",

note = "Publisher Copyright: {\textcopyright} 2017, Pleiades Publishing, Ltd.",

year = "2017",

month = sep,

day = "1",

doi = "10.1134/S086986431705016X",

language = "English",

volume = "24",

pages = "803--806",

journal = "Thermophysics and Aeromechanics",

issn = "0869-8643",

publisher = "PLEIADES PUBLISHING INC",

number = "5",

}

RIS

TY - JOUR

T1 - Heat flux density in the region of droplet contact line on a horizontal surface of a thin heated foil

AU - Cheverda, V. V.

AU - Karchevsky, A. L.

AU - Marchuk, I. V.

AU - Kabov, O. A.

PY - 2017/9/1

Y1 - 2017/9/1

N2 - The evaporating water droplets on a horizontal heated substrate were experimentally studied. The constantan foil 25 μm thick with a size of 42×35 mm2 was used as a substrate. The experiments were carried out with a single droplet or with an ensemble of two or three droplets on the foil. The temperature of the lower surface of foil was measured by an IR scanner. To determine the heat flux density at evaporation of liquid near the contact line, the Cauchy problem for the heat conduction equation was solved using the thermographic data. The results of calculations showed that the maximal heat flux density takes place in the region of the contact line and exceeds the average heat flux density from the entire surface of foil. This is explained by the heat inflow from the foil periphery to the droplet due to relatively high value of the coefficient of heat conductivity of the foil material and high evaporation intensity in the contact line region.

AB - The evaporating water droplets on a horizontal heated substrate were experimentally studied. The constantan foil 25 μm thick with a size of 42×35 mm2 was used as a substrate. The experiments were carried out with a single droplet or with an ensemble of two or three droplets on the foil. The temperature of the lower surface of foil was measured by an IR scanner. To determine the heat flux density at evaporation of liquid near the contact line, the Cauchy problem for the heat conduction equation was solved using the thermographic data. The results of calculations showed that the maximal heat flux density takes place in the region of the contact line and exceeds the average heat flux density from the entire surface of foil. This is explained by the heat inflow from the foil periphery to the droplet due to relatively high value of the coefficient of heat conductivity of the foil material and high evaporation intensity in the contact line region.

KW - liquid droplet

KW - local heating

KW - wetting contact line

KW - BUBBLE

UR - http://www.scopus.com/inward/record.url?scp=85038883415&partnerID=8YFLogxK

U2 - 10.1134/S086986431705016X

DO - 10.1134/S086986431705016X

M3 - Article

AN - SCOPUS:85038883415

VL - 24

SP - 803

EP - 806

JO - Thermophysics and Aeromechanics

JF - Thermophysics and Aeromechanics

SN - 0869-8643

IS - 5

ER -

ID: 9057221