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181 0 _ai
182 0 _ab
200 1 _aDynamic and kinematic characteristics of unsteady motion of a water-in-oil emulsion droplet in collision with a solid heated wall under conditions of convective heat transfer
_fA. E. Semyonova, N. A. Khomutov, S. Ya. Misyura, M. V. Piskunov
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 52 tit.]
330 _aThe paper presents the experimental results of spreading, fingering and corona-like splashing of water-in-oil emulsion droplets based on n-decane, isoparaffin oil and distilled water in the range of Weber numbers We = 100-900, wall temperatures Tw = 20-80 °C and in collision with a smooth solid surface. The spreading features and separate convective rolling structures in emulsion droplets are examined at the late stages of wetting. The effect of Tw on the viscous dissipation energy and the maximum spreading coefficient is established. The validity of the assumptions explaining the contradictory behavior of the maximum spreading diameter of emulsion droplets with increasing temperature is studied. The assumption of unstable behavior of the emulsion droplet rim during spreading is proposed. The maximum emulsion corona diameter and height decrease linearly with the Tw growth due to the longer corona lifetime. The maximum corona diameter increases following the power law with increasing the Brinkman number due to an increase in the liquid viscosity and a decrease in Tw. The results help to predict the corona's behavior by determining the relationship between the viscous dissipation of the spreading liquid and the energy transferred to the liquid from the wall due to molecular (thermal) conduction.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tInternational Communications in Heat and Mass Transfer
463 _tVol. 137
_v[106277, 17 p.]
_d2022
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aemulsion droplet
610 1 _adroplet-wall interaction
610 1 _aconvective heat transfer
610 1 _aspreading
610 1 _asplashing
610 1 _afingering
610 1 _aкапли
610 1 _aэмульсии
610 1 _aконвективный теплообмен
610 1 _aбрызги
701 1 _aSemyonova
_bA. E.
_cspecialist in the field of thermal power engineering and heat engineering
_cresearch engineer at Tomsk Polytechnic University
_f1998-
_gAleksandra Evgenjevna
_2stltpush
_3(RuTPU)RU\TPU\pers\47497
701 1 _aKhomutov
_bN. A.
_cspecialist in the field of thermal power engineering and heat engineering
_cresearch engineer at Tomsk Polytechnic University
_f1997-
_gNikita Andreevich
_2stltpush
_3(RuTPU)RU\TPU\pers\47495
701 1 _aMisyura
_bS. Ya.
_cspecialist in the field of power engineering
_cleading researcher of Tomsk Polytechnic University, candidate of technical sciences
_f1964-
_gSergey Yakovlevich
_2stltpush
_3(RuTPU)RU\TPU\pers\39641
701 1 _aPiskunov
_bM. V.
_cspecialist in the field of thermal engineering
_cengineer of Tomsk Polytechnic University
_f1991-
_gMaksim Vladimirovich
_2stltpush
_3(RuTPU)RU\TPU\pers\34151
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИнженерная школа энергетики
_bНаучно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова)
_h8025
_2stltpush
_3(RuTPU)RU\TPU\col\23504
801 2 _aRU
_b63413507
_c20230203
_gRCR
856 4 0 _uhttps://doi.org/10.1016/j.icheatmasstransfer.2022.106277
942 _cCF