Velocity profiles of fluid flow close to a hydrophobic surface

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dc.contributor.authorFialová Simonacs
dc.contributor.authorPochylý Františekcs
dc.contributor.authorJašíková Darinacs
dc.contributor.authorKotek Michalcs
dc.date.accessioned2018-09-25T12:13:58Z
dc.date.available2018-09-25T12:13:58Z
dc.date.issued2017cs
dc.description.abstractThe results of research on viscous liquid flow upon a superhydrophobic surface are presented in the paper. In the introduction, the degrees of surface hydrophobicity in correlation with an adhesion coefficient are defined. The usage of the adhesion coefficient for the definition of a new boundary condition is employed for expressing the slip of the liquid over the superhydrophobic surface. The slip of the liquid was identified on a special experimental device. The essence of the device consists of a tunnel of rectangular cross section whose one wall is treated with a superhydrophobic layer. The other walls are made of transparent organic glass whose surface is hydrophilic. Velocity profiles are measured by PIV. The methodology is drawn so that it allows the speed determination at the closest point to the wall. The measurements were performed for different Reynolds numbers for both laminar and turbulent flow. Based on the measured velocity profiles, marginal terms of use have been verified, expressing slippage of the liquid on the wall. New forms of velocity profiles considering superhydrophobic surfaces are shown within the work.en
dc.format.extent6cs
dc.identifier.doi10.1051/epjconf/201714302023
dc.identifier.issn2100-014Xcs
dc.identifier.urihttps://dspace.tul.cz/handle/15240/31184
dc.identifier.urihttps://www.epj-conferences.org/articles/epjconf/pdf/2017/12/epjconf_efm2017_02023.pdf
dc.language.isoengcs
dc.relation.ispartofseries1cs
dc.relation.urihttps://www.epj-conferences.org/articles/epjconf/abs/2017/12/epjconf_efm2017_02023/epjconf_efm2017_02023.htmlcs
dc.subjectultrahydrophobic surfacecs
dc.subjectmeasurmentcs
dc.subjectadhesion coefficient estimationcs
dc.subjectmethodiccs
dc.titleVelocity profiles of fluid flow close to a hydrophobic surfacecs
local.identifier.publikace4645
local.identifier.wok407743800025en
local.relation.issue2017cs
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