Experimental Study of Evaporating Droplets Suspended Ethanol-Water Solution Under Conditions of Forced Convection

Starinskaya, Elena; Miskiv, N. B.; Назаров, А. Д.; Терехов, В. И.; Терехов, В. И.

doi:10.1615/interfacphenomheattransfer.2018025580

Cited by 5 publications

(7 citation statements)

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“…A description of the experimental results and procedure are presented in [14]. In what follows, these will be briefly summarised.…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

“…The authors of [13] compared the experimentally observed evaporation characteristics of sessile and suspended water/ethanol droplets. The results of experimental investigation of the evaporation of supported water/ethanol droplets are presented in [14].…”

Section: Introductionmentioning

confidence: 99%

“…The current paper is primarily focused on linking the experimental results presented in [14] and the modelling approach developed at the University of Brighton [3]. An overview of the experimental setup and procedure is given in Section 2.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaporation of water/ethanol droplets in an air flow: Experimental study and modelling

Starinskaya

Miskiv

Назаров

et al. 2021

International Journal of Heat and Mass Transfer

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“…A description of the experimental results and procedure are presented in [14]. In what follows, these will be briefly summarised.…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaporation of water/ethanol droplets in an air flow: Experimental study and modelling

Starinskaya

Miskiv

Назаров

et al. 2021

International Journal of Heat and Mass Transfer

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“…Moreover, Bochkareva et al, 13 Narasu et al, 14 Nguyen et al, 15 and Starinskaya et al 16 studied the blended alcohol–water droplet in a force convective medium. The experimental work of Bochkareva et al 13 was mainly focused on the evaporation process of pure water and blended ethanol–water droplet under relatively higher Reynolds number (100 ≤ Re ≤ 400) conditions.…”

Section: Introductionmentioning

confidence: 99%

Two‐phase modeling of evaporation characteristics of ethanol droplet under force‐convection environment

2023

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Studies on the evaporation phenomenon of a pure ethanol droplet have been mostly confined to the semianalytical modeling in stagnant ambient. Investigation into this aspect in a convective environment by considering the Navier–Stokes equation is also minimal. Hence, in this study we analyze and investigate the evaporation characteristics of a single‐component spherical‐shaped isolated pure ethanol droplet under force convective air environment by considering both gas‐ and liquid‐phase motions, nonunitary Lewis number in the interface, variable Stefan flow (blowing) effect, and the transient droplet heating. The finite difference method is utilized while solving the governing equations of the spherical polar coordinate system for species, momentum, and energy transfer. The maximum Reynolds number and ambient temperature are kept at 100 and 600 K, respectively. The present work is validated by comparing the normalized surface regression curve of the droplet with the earlier experimental and theoretical results. Using the current simulated data, flow and temperature profiles of both gas and liquid regions are visualized in streamline and isotherm contour plots at various instants of time. It is observed that at a moderate Reynolds number a detached vortex forms at the downstream location of the droplet. However, the detachment length increases with time. The temperature gradients along the droplet surface are observed at the initial stage. Moreover, the heat‐up period occupies about 20% of the total lifetime of the droplet. The droplet life and heat‐up period decrease with an increase in free‐stream velocity. In addition, the saturation temperature increases with ambient temperature.

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“…There are a large number of technologies based on the high-temperature evaporation and boiling of liquids, emulsions, and suspensions (Bochkareva et al, 2018;Morozov et al, 2018). These technologies deal with technical limitations of the corresponding units, devices, and productions.…”

Section: Introductionmentioning

confidence: 99%

Using Planar Laser-Induced Fluorescence to Study the Phase Transformations of Two-Component Liquid and Suspension Droplets

Волков

Кузнецов

2018

Interfac Phenom Heat Transfer

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Using the planar laser-induced fluorescence (PLIF), we performed experiments to determine evaporation dynamics of homogeneous and heterogeneous droplets of liquids, conditions of their boiling, and explosive breakup. For the 1-2 mm water droplets, the distribution of highly non-homogeneous and non-steady temperature field was detected by highspeed cross-correlation video recording and the Tema Automotive software. We identified highly nonlinear dependences of evaporation rate on heating temperature and time as well as water droplet size. For the two-component liquids and water-based suspensions of graphite, we revealed unsteady temperature fields and established mechanisms and regimes of the explosive breakup of the heterogeneous droplets when heated. The regimes differ in the number and dimensions of the emerging gas-liquid fragments as well as the durations of the main stages. The three regimes of warming-up and evaporation of the heterogeneous droplets have been obtained. The explosive breakup of droplets enables provision for the secondary atomization of the liquid with the emergence of an aerosol cloud. The surface area of the liquid increases several-fold. The temperature variations at the water/solid or water/flammable component interfaces were determined corresponding to each boiling and breakup regime. Using the PLIF, we studied reasons and mechanism of the explosive breakup of water droplets with single large carbonaceous inclusions when heated.

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Experimental Study of Evaporating Droplets Suspended Ethanol-Water Solution Under Conditions of Forced Convection

Cited by 5 publications

References 0 publications

Evaporation of water/ethanol droplets in an air flow: Experimental study and modelling

Evaporation of water/ethanol droplets in an air flow: Experimental study and modelling

Two‐phase modeling of evaporation characteristics of ethanol droplet under force‐convection environment

Using Planar Laser-Induced Fluorescence to Study the Phase Transformations of Two-Component Liquid and Suspension Droplets

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