Influence of the contact angle on the wettability of horizontal-tube falling films in the droplet and jet flow modes

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dc.contributor.authorFernández de Arroiabe, Peru
dc.contributor.authorMartinez-Urrutia, Asier
dc.contributor.authorPeña, Xabier
dc.contributor.authorMartinez-Agirre, Manex
dc.contributor.authorBou-Ali, M. Mounir
dc.contributor.institutionTecnalia Research & Innovation
dc.contributor.institutionSISTEMAS TÉRMICOS EFICIENTES
dc.date.issued2018-06
dc.descriptionPublisher Copyright: © 2018 Elsevier Ltd and IIR
dc.description.abstractWettability has a key impact on the performance of LiBr-H2O horizontal-tube falling film absorbers working under typical operating conditions. Therefore, it is necessary to study the influence of the wettability properties on the film hydrodynamics and wetted area. This work analyses the influence of the contact angle (0° – 120°) on the transient film hydrodynamics and the wetted area in the droplet and jet flow modes (7 ≤ Re ≤ 53). The comparison between two-dimensional and three-dimensional models evidences that three-dimensional models are needed for incomplete wetting conditions. The influence of the contact angle on both the film hydrodynamics and wetted area is demonstrated using 3D unsteady CFD model. Furthermore, the results indicate that each Reynolds number has a maximum contact angle to wet the whole tube steadily. When the value of the contact angle is lower than this maximum value, the contact angle has not influence on the wetting ratio. In contrast, at higher values, the wetting ratio decreases as the contact angle increases.en
dc.description.statusPeer reviewed
dc.format.extent10
dc.format.extent2540438
dc.identifier.citationFernández de Arroiabe , P , Martinez-Urrutia , A , Peña , X , Martinez-Agirre , M & Bou-Ali , M M 2018 , ' Influence of the contact angle on the wettability of horizontal-tube falling films in the droplet and jet flow modes ' , International Journal of Refrigeration , vol. unknown , pp. 12-21 . https://doi.org/10.1016/j.ijrefrig.2018.04.003
dc.identifier.doi10.1016/j.ijrefrig.2018.04.003
dc.identifier.issn0140-7007
dc.identifier.otherresearchoutputwizard: 11556/542
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85047239388&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofInternational Journal of Refrigeration
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsAbsorption technologies
dc.subject.keywordsWater-lithium bromide
dc.subject.keywordsFalling film
dc.subject.keywordsContact angle
dc.subject.keywordsWettability
dc.subject.keywordsCFD
dc.subject.keywordsAbsorption technologies
dc.subject.keywordsWater-lithium bromide
dc.subject.keywordsFalling film
dc.subject.keywordsContact angle
dc.subject.keywordsWettability
dc.subject.keywordsCFD
dc.subject.keywordsBuilding and Construction
dc.subject.keywordsMechanical Engineering
dc.subject.keywordsFunding Info
dc.subject.keywordsThe authors would like to express their gratitude for the support of BEROA-GO 3.0 and research groups (No. IT009-16)
dc.subject.keywordsThe authors would like to express their gratitude for the support of BEROA-GO 3.0 and research groups (No. IT009-16)
dc.titleInfluence of the contact angle on the wettability of horizontal-tube falling films in the droplet and jet flow modesen
dc.typejournal article
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