Determination of parameters of heat and mass transfer in evaporating drops

Borodulin, V. Yu; Letushko, V. N.; Низовцев, М. И.; Sterlyagov, A. N.

doi:10.1016/j.ijheatmasstransfer.2017.02.042

Cited by 51 publications

(10 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The measured decrease in temperature is due to evaporative cooling of the droplet, where similar values in literature acquired by using infrared thermography for evaporating water droplets (2 mm in diameter) have been reported to show temperature changes of 6 K [27]. Evaporation of droplets of this size has also been studied with emission diffusion computational models [28] that show the total time for droplet evaporation occurs between 20-60 minutes depending on the dimensions of the droplet, humidity, ambient temperature and pressure. We observe a change in size of the droplet as it evaporates, however this process occured at timescales much larger than the single pixel measurement acquired over 180 seconds and is in agreement with the emission diffusion model.…”

Section: Resultssupporting

confidence: 75%

Micron scale thermometry using lanthanide doped tellurite glass

Stavrevski

Schartner

Abraham

et al. 2019

AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (AC

View full text Add to dashboard Cite

Quantifying temperature variations at the micron scale can provide new opportunities in optical sensing. In this paper, we present a novel approach using the temperature-dependent variations in fluorescence of rare-earth doped tellurite glass to provide a micron-scale image of temperature variations over a 200 micrometre field of view. We demonstrate the system by monitoring the evaporation of a water droplet and report a net temperature change of 7.04 K with a sensitivity of at least 0.12 K. These results establish the practicality of this confocal-based approach to provide high-resolution marker-free optical temperature sensing.

show abstract

Section: Resultssupporting

confidence: 75%

Micron scale thermometry using lanthanide doped tellurite glass

Stavrevski

Schartner

Abraham

et al. 2019

AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (AC

View full text Add to dashboard Cite

show abstract

“…This allows coupling the kinetic theory of gases and the diffusion approach outside the Knudsen layer [49][50][51][52]. the evaporation model has shown a good agreement with the experimental data [53]. This model has been also successfully employed in recently published studies [23,26].…”

Section: Modeling Of Evaporation Of Microdropletsmentioning

confidence: 70%

Modeling Evaporation of Water Droplets as Applied to Survival of Airborne Viruses

et al. 2020

View full text Add to dashboard Cite

Many viruses, such as coronaviruses, tend to spread airborne inside water microdroplets. Evaporation of the microdroplets may result in a reduction of their contagiousness. However, the evaporation of small droplets is a complex process involving mass and heat transfer, diffusion, convection and solar radiation absorption. Virological studies indicate that airborne virus survival is very sensitive to air humidity and temperature. We employ a model of droplet evaporation with the account for the Knudsen layer. This model suggests that evaporation is sensitive to both temperature and the relative humidity (RH) of the ambient air. We also discuss various mechanisms such as the effect of solar irradiation, the dynamic relaxation of moving droplets in ambient air and the gravitational sedimentation of the droplets. The maximum estimate for the spectral radiative flux in the case of cloudless sky showed that the radiation contribution to evaporation of single water droplets is insignificant. We conclude that at small and even at moderately high levels of RH, microdroplets evaporate within dozens of seconds with the convective heat flux from the air being the dominant mechanism in every case. The numerical results obtained in the paper are in good qualitative agreement with both the published laboratory experiments and seasonal nature of many viral infections. Sophisticated experimental techniques may be needed for in situ observation of interaction of viruses with organic particles and living cells within microdroplets. The novel controlled droplet cluster technology is suggested as a promising candidate for such experimental methodology.

show abstract

“…Закономерности испарения капель играют важную роль при решении ряда прикладных задач для теплотехнических систем и технологических процессов [1,2]. Различным аспектам нагрева и испарения отдельных капель и капельных систем посвящены многочисленные публикации, связанные с численным моделированием [3][4][5][6][7] и экспериментальными исследованиями [8][9][10][11][12][13][14] процесса испарения. Большинство экспериментальных результатов исследования скорости испарения капель жидкости получено при их нагреве в условиях кондуктивного, конвективного или комбинированного радиационноконвективного теплообмена [2,8,14].…”

unclassified

“…Большинство экспериментальных результатов исследования скорости испарения капель жидкости получено при их нагреве в условиях кондуктивного, конвективного или комбинированного радиационноконвективного теплообмена [2,8,14]. Скорость испарения капель определялась при их нагреве на твердой подложке [11], в условиях обдува неподвижной капли высокотемпературным потоком воздуха [2,[8][9][10], при движении капель через газообразные продукты сгорания [2,[12][13][14] или через полый цилиндрический нагреватель [2,12].…”

unclassified

Особенности Испарения Капли При Лучистом И Конвективном Нагреве

Архипов¹,

Басалаев²,

Золоторёв³

et al. 2020

Письма В Журнал Технической Физики

View full text Add to dashboard Cite

New method for determining the evaporation rate of single levitating drop at radiant heat flux has been proposed. The results of experimental study of the evaporation rate of distilled water drop upon heating by radiant and convective heat flux in the range of q = (0.25–1.5) W/cm^2 are presented. Comparative analysis of the features of the drop evaporation during radiant and convective heating has been carried out.

show abstract

Determination of parameters of heat and mass transfer in evaporating drops

Cited by 51 publications

References 35 publications

Micron scale thermometry using lanthanide doped tellurite glass

Micron scale thermometry using lanthanide doped tellurite glass

Modeling Evaporation of Water Droplets as Applied to Survival of Airborne Viruses

Особенности Испарения Капли При Лучистом И Конвективном Нагреве

Contact Info

Product

Resources

About