Experimental and Numerical Studies of Evaporation of a Sessile Water Drop on a Heated Conductive Substrate

Kabov, Oleg; Gatapova, Elizaveta Ya.; Semenov, Andrey A.; Jutley, Mahnprit S.; Ajaev, Vladimir S.; Kirichenko, Ekaterina O.; Feoktistov, Dmitriy; Кузнецов, Г. В.; Зайцев, Д. В.

doi:10.1615/interfacphenomheattransfer.2019030862

Cited by 21 publications

(5 citation statements)

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“…The drop was formed by a high-precision single-channel dispenser. The geometric parameters of the droplet (contact angle (θ), diameter (d), and height (h)) were determined from the obtained shadow images by the "tangential 1" method [ [7]].…”

Section: Experimental and Calculation Methodsmentioning

confidence: 99%

Study of the droplet transition from Cassie to Wenzel state on laser-modified metal surfaces

Borovikov

2022

J. Phys.: Conf. Ser.

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The paper presents the experimental study of the influence of laser radiation on the texture formation on aluminum alloy, the droplet transition from Cassie to Wenzel state, as well as the main geometric characteristics of a droplet (contact angle, droplet diameter and height). It was found that laser methods for changing the characteristics and texture of metal surfaces are a modern, flexible tool that makes it possible to achieve unique results in controlling the properties of metal surfaces.

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Section: Experimental and Calculation Methodsmentioning

confidence: 99%

Study of the droplet transition from Cassie to Wenzel state on laser-modified metal surfaces

Borovikov

2022

J. Phys.: Conf. Ser.

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“…Thus, the evaporation of a sessile drop [3,4] on heated substrates is a fundamental process of the liquid-gas phase transition, which requires careful study under various conditions. One of the key interests is the effect of substrate wettability on droplet evaporation.…”

Section: Introductionmentioning

confidence: 99%

Evaporation of a sessile droplet pinned by a groove on a heated substrate

Kunts

Kochkin

Kabov

2022

J. Phys.: Conf. Ser.

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The process of evaporation of sessile water droplets on a heated substrate was experimentally studied. A droplet evaporation is a fundamental phase change process which requires thorough consideration in various conditions. In this work we investigated the evaporation of water droplets on the smooth copper substrate with a circle groove made on its surface, which helped to keep the sessile droplet stable. Thus, the contact area of the evaporating droplet with the substrate remained constant, while the contact angle varied over a wide range. The experiment was conducted with a help of Krüss DSA100.

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“…Liquid droplet evaporation on a solid surface is a complex process [14] influenced by the parameters of the environmental conditions, such as temperature [15,16], pressure [17], air flow rate [18], as well as the thermal conductivity of a material [14], the surface roughness [19], its chemical composition [20], the chemical composition uniformity of the surface layer [21], and the wettability [20]. The droplet evaporation process can be controlled by varying one of these parameters.…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

Effect of mechanical polishing of aluminum alloy surfaces on wetting and droplet evaporation at constant and cyclically varying pressure in the chamber

et al. 2021

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Improving the mechanical polishing of engineering surfaces in terms of the wetting and droplet evaporation theories is important for increasing the efficiency of modern equipment. Depending on the function of engineering surfaces, the mechanical polishing allows changing the wetting, as well as the liquid droplet evaporation rates and modes. However, the prediction of the processes occurring at the liquid/gas/solid contact line becomes more complicated after modification of metal surfaces, as well as under changing the environmental conditions. This work focuses on the study of wetting and evaporation of liquid droplets from polished aluminum alloy surfaces at constant and cyclically varying pressure. Wetting and droplet evaporation are key processes in equipment of the thermal power industry, in particular, operating at constant and cyclically varying high pressure: water-water steam generators, water vapor separators, droplet catchers, etc. Therefore, we investigated droplet wetting and evaporation modes after mechanical processes of surfaces, including polishing by tumbling, satin finishing, grinding and polishing by disks and pastes. We determined the condition when polishing of aluminum alloy surfaces by these methods does not affect the wettability by liquid droplets. Moreover, we established the effect of constant and cyclically varying high pressure on the droplet evaporation rate and evaporation modes. The pressure was found not to affect the characteristics of water droplet evaporation under conditions of periodically varied pressure in the chamber from the atmospheric (0.1 MPa) to high (0.5, 1.0, 1.5, and 2.0 MPa) values.

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Experimental and Numerical Studies of Evaporation of a Sessile Water Drop on a Heated Conductive Substrate

Cited by 21 publications

References 0 publications

Study of the droplet transition from Cassie to Wenzel state on laser-modified metal surfaces

Study of the droplet transition from Cassie to Wenzel state on laser-modified metal surfaces

Evaporation of a sessile droplet pinned by a groove on a heated substrate

Effect of mechanical polishing of aluminum alloy surfaces on wetting and droplet evaporation at constant and cyclically varying pressure in the chamber

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