Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Dynamics and evaporation of a thin locally heated liquid film sheared by a vapor flow in a microchannel. / Kabova, Yulia O.; Kuznetsov, Vladimir V.; Ohta, Haruhiko и др.
в: Interfacial Phenomena and Heat Transfer, Том 5, № 3, 01.01.2017, стр. 231-249.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Dynamics and evaporation of a thin locally heated liquid film sheared by a vapor flow in a microchannel
AU - Kabova, Yulia O.
AU - Kuznetsov, Vladimir V.
AU - Ohta, Haruhiko
AU - Kabov, Oleg A.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - To study the mechanism of evaporation and dynamics of the joint motion of a thin liquid film and the co-current vapor flow in a microchannel at local heating, a new three-dimensional non-stationary two-sided mathematical model has been proposed. The model takes into account the deformable gas–liquid interface, transfer of heat by liquid and vapor flow, heat loses due to evaporation, thermal conductivity in layers, as well as the temperature dependence of surface tension and liquid viscosity. Assuming the lubrication theory to be valid, the problem has been reduced to four governing equations for the film thickness, temperature fields in the vapor and liquid, and vapor pressure. The significant effect of heater length in the longitudinal direction on the film deformations and evaporation is shown numerically. The calculations show that there is an essentially nonlinear dependence of the minimum film thickness and maximum temperature on the length of the heater at the vapor–liquid interface. It has been found that the average evaporation intensity in all areas of the calculations may practically depend linearly on the length of the heating element.
AB - To study the mechanism of evaporation and dynamics of the joint motion of a thin liquid film and the co-current vapor flow in a microchannel at local heating, a new three-dimensional non-stationary two-sided mathematical model has been proposed. The model takes into account the deformable gas–liquid interface, transfer of heat by liquid and vapor flow, heat loses due to evaporation, thermal conductivity in layers, as well as the temperature dependence of surface tension and liquid viscosity. Assuming the lubrication theory to be valid, the problem has been reduced to four governing equations for the film thickness, temperature fields in the vapor and liquid, and vapor pressure. The significant effect of heater length in the longitudinal direction on the film deformations and evaporation is shown numerically. The calculations show that there is an essentially nonlinear dependence of the minimum film thickness and maximum temperature on the length of the heater at the vapor–liquid interface. It has been found that the average evaporation intensity in all areas of the calculations may practically depend linearly on the length of the heating element.
KW - Deformable gas-liquid interface
KW - Evaporation
KW - Liquid film
KW - Local heat source
KW - Numerical investigation
KW - Thermocapillarity
KW - numerical investigation
KW - INSTABILITY
KW - MICROGAP CHANNELS
KW - thermocapillarity
KW - local heat source
KW - CHIP
KW - liquid film
KW - deformable gas-liquid interface
KW - GAS
KW - evaporation
UR - http://www.scopus.com/inward/record.url?scp=85058233860&partnerID=8YFLogxK
U2 - 10.1615/InterfacPhenomHeatTransfer.2018025178
DO - 10.1615/InterfacPhenomHeatTransfer.2018025178
M3 - Article
AN - SCOPUS:85058233860
VL - 5
SP - 231
EP - 249
JO - Interfacial Phenomena and Heat Transfer
JF - Interfacial Phenomena and Heat Transfer
SN - 2169-2785
IS - 3
ER -
ID: 18488555