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100 _a20181217a2018 k y0engy50 ba
101 0 _aeng
102 _aNL
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aThe role of convection in gas and liquid phases at droplet evaporation
_fP. A. Strizhak, R. S. Volkov, S. Ya. Misyura [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 62 tit.]
330 _aThe article presents the measuring results of droplet velocity and temperature fields using non-contact optical methods: Particle Image Velocity (PIV), Planar Laser Induced Fluorescence (PLIF) and Thermal imager. The novelty of the work is that the influence of free convection in gas and liquid is investigated experimentally and theoretically and that the key criteria affecting heat and mass transfer are determined. The analysis of experimental data has shown that in the initial period of water drop evaporation, the predominant role in the heat exchange is played by the thermal Marangoni convection. However, for an aqueous salt solution, in spite of the strong influence of the surfactant, the dominant role passes to the solutal Marangoni convection (MaC). In the first seconds after the drop falling, convection and heat transfer in liquid are maximal. Under such conditions it is important to realize an accurate numerical simulation to assess the degree of wall cooling and calculate the non-stationary evaporation. When simulating heat transfer, it is incorrect to neglect free convection in gas or liquid due to their strong nonlinear influence on each other. The heat exchange in the drop is extremely conservative to convection in the liquid (the Peclet number Pe?=?100 and the Nusselt number Nu?=?4).
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tInternational Journal of Thermal Sciences
463 _tVol. 134
_v[P. 421-429]
_d2018
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aкапля
610 1 _aиспарение
610 1 _aтеплопередача
610 1 _aфлуоресценция
701 1 _aStrizhak
_bP. A.
_cSpecialist in the field of heat power energy
_cDoctor of Physical and Mathematical Sciences (DSc), Professor of Tomsk Polytechnic University (TPU)
_f1985-
_gPavel Alexandrovich
_2stltpush
_3(RuTPU)RU\TPU\pers\30871
701 1 _aVolkov
_bR. S.
_cspecialist in the field of power engineering
_csenior lecturer, engineer of the Tomsk Polytechnic University, candidate of technical Sciences
_f1987-
_gRoman Sergeevich
_2stltpush
_3(RuTPU)RU\TPU\pers\33926
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 _aLezhnin
_bS. I.
_gSergey Ivanovich
701 1 _aMorozov
_bV. S.
_gVladimir Sergeevich
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
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИсследовательская школа физики высокоэнергетических процессов
_c(2017- )
_h8118
_2stltpush
_3(RuTPU)RU\TPU\col\23551
801 2 _aRU
_b63413507
_c20210201
_gRCR
856 4 _uhttps://doi.org/10.1016/j.ijthermalsci.2018.08.031
942 _cCF