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dc.contributor.authorYang, Kun
dc.contributor.authorZhao, Lihao
dc.contributor.authorAndersson, Helge Ingolf
dc.date.accessioned2018-03-15T08:30:06Z
dc.date.available2018-03-15T08:30:06Z
dc.date.created2017-09-29T03:25:58Z
dc.date.issued2017
dc.identifier.citationInternational Journal of Multiphase Flow. 2017, 98 45-55.nb_NO
dc.identifier.issn0301-9322
dc.identifier.urihttp://hdl.handle.net/11250/2490605
dc.description.abstractInertial particles dispersed in wall-bounded flows in pipes and channels are known to accumulate close to the walls. The segregation ability depends greatly on the inertia-selection effects of the near-wall quasi-coherent turbulent structures, which are formed near both walls where shear stresses are high. Here, however, we investigated if and how particles segregate in the vicinity of walls in absence of mean shear. A tailor-made turbulent Couette–Poiseuille flow was designed such that the mean shear vanished at the moving wall, thereby resulting in an asymmetric flow with conventional near-wall turbulent structures only at one wall. In addition, Large-Scale Structures (LSSs) were observed in the flow, which greatly influenced the distribution of the inertial particles. Particles of five different inertia groups were embedded in the directly simulated turbulence field and examined. It was found that particles of high inertia segregated near the stationary wall where mean shear prevailed, but also near the moving wall where mean shear was absent. However, due to the qualitatively distinct near-wall flow structures, the inertia effects on the actual segregation were different at the two walls. Mechanisms causing the asymmetric wall-normal segregation were explored with the focus on the moving-wall region, where the quasi-coherent turbulent structures were absent, and the local fluid structures were dominated by imprints of the LSSs.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.subjectTurbulensnb_NO
dc.subjectTurbulencenb_NO
dc.subjectCFD-beregningernb_NO
dc.subjectCFDnb_NO
dc.subjectPartiklernb_NO
dc.titleParticle segregation in turbulent Couette-Poiseuille flow with vanishing wall shearnb_NO
dc.typeJournal articlenb_NO
dc.description.versionsubmittedVersionnb_NO
dc.subject.nsiVDP::Fysikk: 430nb_NO
dc.subject.nsiVDP::Physics: 430nb_NO
dc.source.pagenumber45-55nb_NO
dc.source.volume98nb_NO
dc.source.journalInternational Journal of Multiphase Flownb_NO
dc.identifier.doi10.1016/j.ijmultiphaseflow.2017.09.001
dc.identifier.cristin1500073
dc.relation.projectNorges forskningsråd: 250744nb_NO
dc.relation.projectNotur/NorStore: NS2649Knb_NO
dc.relation.projectNotur/NorStore: NN2649Knb_NO
dc.description.localcodeThis is a submitted manuscript of an article published by Elsevier Ltd in International Journal of Multiphase Flow, 5 September 2017.nb_NO
cristin.unitcode194,64,25,0
cristin.unitnameInstitutt for energi- og prosessteknikk
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode1


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