Experimental Thermodynamics in Droplet Interactions

A special issue of Fluids (ISSN 2311-5521). This special issue belongs to the section "Heat and Mass Transfer".

Deadline for manuscript submissions: closed (20 December 2021) | Viewed by 5864

Special Issue Editor


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Guest Editor
Department of Engineering and Applied Sciences, University of Bergamo, viale Marconi 5, 24044 Dalmine, Italy
Interests: experimental investigations in multiphase flow; porous media; heat and mass transfer by X-Ray microCT (micro-computed tomography); LDA and PDA (Laser Doppler Anemometry and laser Phase Doppler Anemometry); fluids contact angle determination in complex surfaces and wettability; droplet dynamics and interactions (atomizer; spray; injectors)
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Special Issue Information

Dear Colleagues,

Experimental techniques have played a decisive role in the history of physical sciences, especially in multiphase thermodynamics. I believe, it is very useful to publish novel contributions to further widen a knowledge that still deserves researches, eventually triggered by the develop of new discovering due to novel investigation techniques.

This Special Issue of Fluids “Experimental Thermodynamics in Droplet Interactions” aims to present a collection of papers on fluid–structure interactions. We are interested in the development or the applications of measurement techniques including both experimental visualization and investigations that support the understanding of thermodynamic phenomena with quantitative measurements of variables such as heat and mass flow, complex interfaces, and phase changes, preferably in combination with multidisciplinary comparisons with analytical models or numerical simulations. Contributions on X-ray imaging applications in this area will be prioritized.

Prof. Dr. Maurizio Santini
Guest Editor

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Keywords

  • complex droplets interactions
  • droplet on porous surfaces
  • surface wettability
  • fluid atomization
  • X-Rays microCT and 3D imaging techniques

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Published Papers (1 paper)

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Research

17 pages, 34712 KiB  
Article
The Effect of Patterned Micro-Structure on the Apparent Contact Angle and Three-Dimensional Contact Line
by Patrick Foltyn, Ferdinand Restle, Markus Wissmann, Stefan Hengsbach and Bernhard Weigand
Fluids 2021, 6(2), 92; https://doi.org/10.3390/fluids6020092 - 23 Feb 2021
Cited by 6 | Viewed by 5233
Abstract
The measurement of the apparent contact angle on structured surfaces is much more difficult to obtain than on smooth surfaces because the pinning of liquid to the roughness has a tremendous influence on the three phase contact line. The results presented here clearly [...] Read more.
The measurement of the apparent contact angle on structured surfaces is much more difficult to obtain than on smooth surfaces because the pinning of liquid to the roughness has a tremendous influence on the three phase contact line. The results presented here clearly show an apparent contact angle variation along the three phase contact line. Accordingly, not only one value for the apparent contact angle can be provided, but a contact angle distribution or an interval has to be given to characterize the wetting behavior. For measuring the apparent contact angle distribution on regularly structured surfaces, namely micrometric pillars and grooves, an experimental approach is presented and the results are provided. A short introduction into the manufacturing process of such structured surfaces, which is a combination of Direct LASER Writing (DLW) lithography, electroforming and hot embossing shows the high quality standard of the used surfaces. Full article
(This article belongs to the Special Issue Experimental Thermodynamics in Droplet Interactions)
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