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100			_a20230203a2021 k y0engy50 ba
101	0		_aeng
102			_aUS
135			_adrcn ---uucaa
181		0	_ai
182		0	_ab
200	1		_aUnsteady convective flow of a preheated water-in-oil emulsion droplet impinging on a heated wall _fM. V. Piskunov, N. A. Khomutov, A. E. Semyonova [et al.]
203			_aText _celectronic
300			_aTitle screen
320			_a[References: 59 tit.]
330			_aThis work proposes a mechanism of deformation of an emulsion droplet upon collision with a wall, considering the vortex motion of a liquid inside the droplet. This motion leads to an increase in dissipative energy losses, affects spreading, corona splashing, and droplet relaxation at different liquid and wall temperatures, ranging from 20 °C to 80 °C, and influences the equilibrium shape of the drop during the liquid relaxation. For We = 100–900 and Re = 100–4000, a physical model is presented for the maximum spreading diameter of the emulsion droplet; it takes into account the heating of the boundary viscous layer and the development of temperature gradients along the droplet height, convective mixing of the liquid layers, and translational and vortex flow motion along the radius and height of the droplet. The process of corona splashing of the emulsion droplet has been studied, and the influence of the viscosity gradient due to the intermittent near-wall water film formation on the dynamics of the “corona” has been revealed. These differences led to the formation of an air gap, which in the case of an emulsion drop caused the development of a corona at lower We compared to homogeneous liquids. The duration of the liquid relaxation before capillary wetting was affected by the potential barrier of the contact line of the droplet, which depended on the vortex component of the velocity field as well as on the temperatures of the interacting media. Altering the initial thermal boundary conditions changed the relaxation time up to 60%.
333			_aРежим доступа: по договору с организацией-держателем ресурса
461			_tPhysics of Fluids
463			_tVol. 34, iss. 9 _v[093311, 20 p.] _d2022
610	1		_aэлектронный ресурс
610	1		_aтруды учёных ТПУ
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
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	_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	_aAshikhmin _bA. E. _cSpecialist in the field of thermal power engineering and heat engineering _cResearch Engineer of Tomsk Polytechnic University _f1998- _gAlexander Evgenjevich _2stltpush _3(RuTPU)RU\TPU\pers\47569
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
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 _c20230517 _gRCR
856	4		_uhttps://doi.org/10.1063/5.0107628
942			_cCF