On the role of capillary waves in the mechanism of coalescence of a droplet cluster

Fedorets, Alexander A.; Marchuk, I. V.; Kabov, Oleg

doi:10.1134/s0021364014050087

Cited by 28 publications

(20 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…3. The phenomenon of droplet cluster was investigated in detail in [13][14][15]. Experiments show that the droplet cluster is always formed near the heating area and practically does not influence the dynamics of the liquid layer breakdown.…”

Section: Resultsmentioning

confidence: 99%

Studying the Dynamics of Breakdown of Thin Horizontal Liquid Layers with Local Heating

Spesivtsev

Lyulin

2016

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract. Experimental study of liquid layers breakdown when heated locally from the substrate side was made. Water and ethanol were used as working liquids with a layer thickness of 300 μm. Basic steps of the breakdown process were found and mean velocities of the dry spot formation were determined; the values are 0.06 mm/sec for ethanol and 5.15 mm/sec for water. The formation of residual layer over the hot-spot before the breakdown has been found for both liquids. The creation of a droplet cluster near the heating region is observed when using water as a working fluid. It was shown that evaporation is one of the general factors influencing the process of layer breakdown and dry spot formation as well as thermocapillary effect.

show abstract

Section: Resultsmentioning

confidence: 99%

Studying the Dynamics of Breakdown of Thin Horizontal Liquid Layers with Local Heating

Spesivtsev

Lyulin

2016

MATEC Web Conf.

View full text Add to dashboard Cite

show abstract

“…No cluster with an average size higher than approximately 4000 μm was observed. In most of previous studies [1][2][3] the authors use the term 'droplet cluster', meaning that the droplets form a localized one-layer array. However, the cluster in their experiments is localized due to the use of localized heating (the size of the heater is around 1 mm), and as such the size of the cluster is roughly coincides with the size of the heater.…”

Section: Resultsmentioning

confidence: 99%

“…The average size of the cluster (defined as the mean between minor and major diameters of the ellipse inscribed in the array of micro-droplets) was found to be approximately from 500 to 4000 μm. Figure 3 represents variation of the average size of the cluster with time for 5 different runs (zero time corresponds to the beginning of recording, the last point in each run corresponds to the moment when the cluster coalescences with liquid; for mechanism of the coalescence refer to [3]). No cluster with an average size higher than approximately 4000 μm was observed.…”

Section: Resultsmentioning

confidence: 99%

“…In this paper the micro-droplet cluster is studied at a relatively large heater of size 1×1 cm 2 , (in works [1][2][3] the size of the heater was around 1 mm) under the condition when the liquid layer ruptures and the micro-droplets move onto the dry surface of the heater.…”

Section: Introductionmentioning

confidence: 99%

“…The drop diameter is on the order of 10 microns; the distance between the drops is of several drop diameters, while the drops levitation height above the liquid surface is comparable to the drop diameter. The possible mechanism of drops levitation is the Stokes force acting onto a drop from the steam flow arising from the heated liquid surface [2,3].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Micro-droplet cluster dynamics in a heated layer of liquid at dry spots formation

Зайцев¹,

Kirichenko²

2016

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract. Organization of a cloud of micro-droplets of condensate into an ordered hexagonal structure levitating over a heated layer of liquid (the so called micro-droplet cluster) has been observed in several recent experimental works, however the nature of this phenomenon is still not completely understood. In the present paper the micro-droplet cluster is studied on a test section with relatively large heating area, under the condition when the liquid layer ruptures and dry spots form on the heater. It has been found, that the micro-droplets can levitate not only over the heated liquid surface, but also over a dry surface of the heater, following the rupture of the liquid layer. The micro-droplets can move over the dry surface as far as 3 mm away from the contact line, and can exist for up to 3.5 seconds after the rupture.

show abstract

A hierarchical levitating cluster containing transforming small aggregates of water droplets

Fedorets

Dombrovsky

Bormashenko

et al. 2022

Microfluid Nanofluid

View full text Add to dashboard Cite

On the role of capillary waves in the mechanism of coalescence of a droplet cluster

Cited by 28 publications

References 5 publications

Studying the Dynamics of Breakdown of Thin Horizontal Liquid Layers with Local Heating

Studying the Dynamics of Breakdown of Thin Horizontal Liquid Layers with Local Heating

Micro-droplet cluster dynamics in a heated layer of liquid at dry spots formation

A hierarchical levitating cluster containing transforming small aggregates of water droplets

Contact Info

Product

Resources

About