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101 0 _aeng
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181 0 _ai
182 0 _ab
200 1 _aExperimental research of the vapor zone between two coalescing droplets of heated water
_fG. V. Kuznetsov, M. V. Piskunov, N. E. Shlegel, P. A. Strizhak
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 35 tit.]
330 _aDroplet interaction regimes in a gas depend on collision parameters and liquid properties. Such interactions may occur at various droplet and gas temperatures. A significant impact on droplet interaction may come from vaporization. It has been largely overlooked as a factor of switching between collision regimes (coalescence, bounce, separation, and disruption) and outcomes. We present the experimental research into the collision characteristics of water droplets heated up to the boiling temperature in a gas medium. The experiments are conducted with the main droplet parameters varied in the following ranges: 0.1-5 m/s velocities, 0.1-1 mm dimensions, and 0-90° impact angle. The videos of colliding heated droplets illustrate the formation of the interface within the coalesced droplet. A vapor zone is identified that is formed due to intense water evaporation from the surface of the two contacting droplets. The colliding droplets are found to localize a certain volume of vapor when the resulting interaction velocities are low and the collisions are head-on. The main characteristics of such vapor zones are established. The most valuable experimental findings are the vapor zone characteristics versus the Weber number, relative interaction velocity, and droplet size ratio, as well as the joint impact of the said factors.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tInternational Communications in Heat and Mass Transfer
463 _tVol. 126
_v[105410, 11 p.]
_d2021
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _adroplets
610 1 _ainteraction
610 1 _acoalescence
610 1 _avapor zone
610 1 _abubbles
610 1 _alifetime
610 1 _aкапли
610 1 _aкоалесценция
701 1 _aKuznetsov
_bG. V.
_cSpecialist in the field of heat power energy
_cProfessor of Tomsk Polytechnic University, Doctor of Physical and Mathematical Sciences
_f1949-
_gGeny Vladimirovich
_2stltpush
_3(RuTPU)RU\TPU\pers\31891
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 _aShlegel
_bN. E.
_cspecialist in the field of heat and power engineering
_cResearch Engineer of Tomsk Polytechnic University
_f1995-
_gNikita Evgenjevich
_2stltpush
_3(RuTPU)RU\TPU\pers\46675
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
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
_c20211018
_gRCR
856 4 0 _uhttps://doi.org/10.1016/j.icheatmasstransfer.2021.105410
942 _cCF