Journal ArticleDOI
Ionic solubility and solutal advection governed augmented evaporation kinetics of salt solution pendant droplets
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In this article, the role of dissolved ions in a polar fluid on its evaporation dynamics was investigated and it was found that the degree of enhancement in the evapse rate is also directly proportional to the solubility of the salt in question.Abstract:
The presence of dispersed inclusions is known to modify the interfacial characteristics in liquids by adsorption–desorption of the ions at interfaces The present article reports the influencing role of dissolved ions in a polar fluid on its evaporation dynamics The evaporation dynamics of pendant droplets of aqueous solutions of variant simple salts and concentrations have been experimentally studied The presence of salts is observed to enhance the evaporation rate (obeying the classical D2 law), and the enhancement has been found to hold a direct proportionality to the concentration of the dissolved salt Furthermore, it is observed that the degree of enhancement in the evaporation rate is also directly proportional to the solubility of the salt in question The phenomenon is explained based on the chemical kinetics and thermodynamics of hydration of the ionic species in the polar fluid The classical evaporation rate constant formulation is found to be inadequate in modeling the enhanced species tranread more
Citations
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Wetting and evaporation of multicomponent droplets
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References
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Journal ArticleDOI
On convection cells induced by surface tension
TL;DR: In this paper, a mechanism was proposed by which cellular convective motion of the type observed by H. Benard, which hitherto has been attributed to the action of buoyancy forces, can also be induced by surface tension forces.
Journal ArticleDOI
Droplet vaporization model for spray combustion calculations
B. Abramzon,William A. Sirignano +1 more
TL;DR: In this article, the effects of variable thermophysical properties, non-unitary Lewis number in the gas film, and effect of the Stefan flow on heat and mass transfer between the droplet and the gas, and the effect of internal circulation and transient liquid heating are investigated.
Journal ArticleDOI
Analysis of the effects of Marangoni stresses on the microflow in an evaporating sessile droplet.
Hua Hu,Ronald G. Larson +1 more
TL;DR: It is found that surfactant contamination, at a surface concentration as small as 300 molecules/microm(2), can almost entirely suppress the Marangoni flow in the evaporating droplet.
Journal ArticleDOI
Evaporation and combustion of sprays
TL;DR: A description of recent spray evaporation and combustion models, taking into account turbulent two-and three-dimensional spray processes found in furnaces, gas turbine combustors, and internal combustion engines, is given in this paper.
Journal ArticleDOI
Fuel droplet vaporization and spray combustion theory
TL;DR: A critical review of modern theoretical developments on problems of droplet vaporization in a high-temperature environment and of spray combustion is presented in this paper, with some mention of empirical evidence.
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