New boundary conditions for fluid interaction with hydrophobic surface

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dc.contributor.authorPochylý, Františekcs
dc.contributor.authorFialová, Simonacs
dc.contributor.authorHavlásek, Michalcs
dc.coverage.volume180cs
dc.date.accessioned2018-10-21T11:50:08Z
dc.date.available2018-10-21T11:50:08Z
dc.date.issued2018-06-04cs
dc.description.abstractSolution of both laminar and turbulent flow with consideration of hydrophobic surface is based on the original Navier assumption that the shear stress on the hydrophobic surface is directly proportional to the slipping velocity. In the previous work a laminar flow analysis with different boundary conditions was performed. The shear stress value on the tube walls directly depends on the pressure gradient. In the solution of the turbulent flow by the k- model, the occurrence of the fluctuation components of velocity on the hydrophobic surface is considered. The fluctuation components of the velocity affect the size of the adhesive forces. We assume that the boundary condition for depending on the velocity gradients will not need to be changed. When the liquid slips over the surface, non-zero fluctuation velocity components occur in the turbulent flow. These determine the non-zero value of the turbulent kinetic energy K. In addition, the fluctuation velocity components also influence the value of the adhesive forces, so it is necessary to include these in the formulation of new boundary conditions for turbulent flow on the hydrophobic surface.en
dc.formattextcs
dc.format.extent519-525cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationEPJ Web of Conferences. 2018, vol. 180, p. 519-525.en
dc.identifier.doi10.1051/epjconf/201818002084cs
dc.identifier.issn2100-014Xcs
dc.identifier.other142525cs
dc.identifier.urihttp://hdl.handle.net/11012/84158
dc.language.isoencs
dc.publisherEDP Sciencescs
dc.relation.ispartofEPJ Web of Conferencescs
dc.relation.urihttps://www.epj-conferences.org/articles/epjconf/abs/2018/15/epjconf_efm2018_02084/epjconf_efm2018_02084.htmlcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2100-014X/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectTurbulent flowen
dc.subjectboundary conditionsen
dc.subjectno-slip conditionsen
dc.titleNew boundary conditions for fluid interaction with hydrophobic surfaceen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-142525en
sync.item.dbtypeVAVen
sync.item.insts2021.02.26 00:57:39en
sync.item.modts2021.02.26 00:15:10en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Energetický ústavcs
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