Journal ArticleDOI
Evaporation-induced flow around a droplet in different gases
TLDR
In this article, the influence of the ambient gas on the evaporation induced flow around a droplet at atmospheric conditions was investigated, and it was shown that the evapse-induced flow in these gases for different liquids was measured using particle image velocimetry.Abstract:
It is known from recent studies that evaporation induces flow around a droplet at atmospheric conditions. This flow is visible even for slowly evaporating liquids like water. In the present study, we investigate the influence of the ambient gas on the evaporating droplet. We observe from the experiments that the rate of evaporation at atmospheric temperature and pressure decreases in a heavier ambient gas. The evaporation-induced flow in these gases for different liquids is measured using particle image velocimetry and found to be very different from each other. However, the width of the disturbed zone around the droplet is seen to be independent of the evaporating liquid and the size of the needle (for the range of needle diameters studied), and only depends on the ambient gas used.It is known from recent studies that evaporation induces flow around a droplet at atmospheric conditions. This flow is visible even for slowly evaporating liquids like water. In the present study, we investigate the influence of the ambient gas on the evaporating droplet. We observe from the experiments that the rate of evaporation at atmospheric temperature and pressure decreases in a heavier ambient gas. The evaporation-induced flow in these gases for different liquids is measured using particle image velocimetry and found to be very different from each other. However, the width of the disturbed zone around the droplet is seen to be independent of the evaporating liquid and the size of the needle (for the range of needle diameters studied), and only depends on the ambient gas used.read more
Citations
More filters
Journal ArticleDOI
Journal of Colloid and Interface Science. Editorial.
Dongyuan Zhao,Gao Qing Max Lu +1 more
Journal ArticleDOI
Evaporation-driven liquid flow through nanochannels
Journal ArticleDOI
Holey graphene oxide membranes containing both nanopores and nanochannels for highly efficient harvesting of water evaporation energy
TL;DR: In this paper, a nanocapillary membrane containing both nanopores and nanochannels based on an assembly of holey graphene oxide (HGO) nanosheets was constructed to enable water molecules to permeate and simultaneously evaporate from the nanostructure.
Journal ArticleDOI
Holey graphene oxide membranes containing both nanopores and nanochannels for highly efficient harvesting of water evaporation energy
TL;DR: In this article , a nanocapillary membrane containing both nanopores and nanochannels based on an assembly of holey graphene oxide (HGO) nanosheets was proposed to enable water molecules to permeate and simultaneously evaporate from the nanostructure.
Journal ArticleDOI
Freestanding silicon nanowires mesh for efficient electricity generation from evaporation-induced water capillary flow
TL;DR: In this article , a highly flexible and efficient evaporation-induced electricity generator (EIEG) that dexterously exploits the directional water capillary flow inside the silicon nanowires (SiNWs) mesh nanopores is developed.
References
More filters
Journal ArticleDOI
Experimental Investigation of Air Entrainment in Free-Falling Particle Plumes
TL;DR: In this paper, the velocity profile of air entrained by free-falling particles is modeled as a Gaussian distribution and the radius of the particle plume is found to increase linearly with increasing drop height, and it also increases with increasing bulk solid mass flow rate.
Journal ArticleDOI
Experimental investigation of near-field stream-wise flow development and spatial structure in triple buoyant plumes
TL;DR: Wang et al. as discussed by the authors presented a systematic experimental study on stream-wise flow development and spatial structure of triple buoyant plumes, which is characterized by spacing ratios S/W (source spacing S divided by source width W).
Journal ArticleDOI
On the predictions for diffusion-driven evaporation of sessile droplets with interface cooling
TL;DR: In this article, the authors considered the effect of interface cooling on the change in density of saturated vapour along the liquid-vapour interface of sessile droplets.
Journal ArticleDOI
Expressions for the evaporation of sessile liquid droplets incorporating the evaporative cooling effect.
TL;DR: In the present model, the evaporative cooling at the droplet surface which leads to a reduction in the evaporation is taken into account and is corroborated experimentally and found in good agreement with the expressions proposed by Hu and Larson in the limiting isothermal case.
Journal ArticleDOI
Correlation for sessile drop evaporation over a wide range of drop volatilities, ambient gases and pressures
TL;DR: In this article, a correlation for the evaporation of sessile drops over a broad range of conditions was developed based on measured data obtained for drops of acetone, methanol, and six hydrocarbons ranging from hexane to isooctane, evaporating in air, helium, argon, and krypton, over a range of ambient pressures from 96 kPa to 615kPa.