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dc.contributor.authorErvik, Åsmund
dc.contributor.authorHellesø, Svein Magne
dc.contributor.authorMunkejord, Svend Tollak
dc.contributor.authorMüller, Bernhard
dc.date.accessioned2017-12-06T13:41:28Z
dc.date.available2017-12-06T13:41:28Z
dc.date.created2014-10-10T15:27:56Z
dc.date.issued2014
dc.identifier.isbn9781479920655
dc.identifier.urihttp://hdl.handle.net/11250/2469413
dc.description.abstractThe behaviour of a single sub-millimetre-size water drop falling through a viscous oil while subjected to an electric field is of fundamental importance to industrial applications such as crude oil electrocoalescers. Detailed studies, both experimental and computational, have been performed previously, but an often challenging issue has been the characterization of the fluids. As numerous authors have noted, it is very difficult to have a perfectly clean water-oil system even for very pure model oils, and the presence of trace chemicals may significantly alter the interface behaviour. In this work, we consider a well-characterized water-oil system where controlled amounts of a surface active agent (Span 80) have been added to the oil. This addition dominates any trace contaminants in the oil, such that the interface behaviour can also be well-characterized. We present the results of experiments and corresponding two-phase-flow simulations of a falling water drop covered in surfactant and subjected to a monopolar square voltage pulse. The results are compared and good agreement is found for surfactant concentrations below the critical micelle concentration.nb_NO
dc.language.isoengnb_NO
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)nb_NO
dc.relation.ispartof2014 IEEE 18th International Conference on Dielectric Liquids ICDL
dc.relation.urihttp://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6893172
dc.titleExperimental and computational studies of water drops falling through model oil with surfactant and subjected to an electric fieldnb_NO
dc.typeChapternb_NO
dc.description.versionsubmittedVersionnb_NO
dc.identifier.doi10.1109/ICDL.2014.6893172
dc.identifier.cristin1163103
dc.relation.projectNorges forskningsråd: 206776nb_NO
dc.description.localcode© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.nb_NO
cristin.unitcode194,64,25,0
cristin.unitnameInstitutt for energi- og prosessteknikk
cristin.ispublishedtrue
cristin.fulltextpreprint


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