The interaction between fluid flow and ultra-hydrophobic surface in mini channel

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dc.contributor.authorJašíková Darinacs
dc.contributor.authorGasič Majacs
dc.contributor.authorFialová Simonacs
dc.contributor.authorKotek Michalcs
dc.contributor.authorKopecký Václavcs
dc.date.accessioned2018-09-25T12:13:39Z
dc.date.available2018-09-25T12:13:39Z
dc.date.issued2017-01-01cs
dc.description.abstractInteraction of liquid with ultra-hydrophobic surface is accompanied by creation of layer of air. The effect of the air film has a potential of use in industry in many applications. The quality of the surface is influenced by matrix roughness, the character of physical or chemical cover. There was developed a method for analysis of the liquid flow and the air film using the lighting in volume, visualization with CCD camera and long distance microscope, and optical filters. There were prepared four stainless steel samples of inner channel of dimensions (80 x 8 x 8) mm and initial surface roughness Ra 0.33, Ra 1.0, Ra 2.0, and Ra 2.2. The inner channel was treated with plasma and commercial hydrophobic coating Greblon (WEILBURGER Coatings GmbH). There was realized study focused on the liquid flow velocity profile close to the air film. There are present results for laminar, transient and turbulent flows. The study also estimated the air film thickness depending on the Re number. The knowledge of the air film behaviour helps applied suitable degree of processing and cover for the target application.en
dc.format.extent6cs
dc.identifier.doi10.1051/epjconf/201714302045
dc.identifier.issn21016275cs
dc.identifier.urihttps://dspace.tul.cz/handle/15240/31137
dc.identifier.urihttps://www.epj-conferences.org/articles/epjconf/pdf/2017/12/epjconf_efm2017_02045.pdf
dc.language.isoengcs
dc.publisherEDP Sciencescs
dc.relation.ispartofseries1cs
dc.subjecthydrophobic surfacecs
dc.subjectPIVcs
dc.subjectsurface roughnesscs
dc.titleThe interaction between fluid flow and ultra-hydrophobic surface in mini channelcs
local.identifier.publikace4595
local.identifier.wok407743800047en
local.relation.issue2017cs
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