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Shear lift effects on the particle motion in two-phase sudden expansion flows

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dc.contributor.author Founti Maria, A en
dc.contributor.author Klipfel Athinodoros, S en
dc.date.accessioned 2014-03-01T02:48:17Z
dc.date.available 2014-03-01T02:48:17Z
dc.date.issued 1994 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/33692
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-0028022262&partnerID=40&md5=31f8d2cc64900df450a09db5c3c8f892 en
dc.subject.other Calculations en
dc.subject.other Drag en
dc.subject.other Gravitation en
dc.subject.other Lift en
dc.subject.other Particles (particulate matter) en
dc.subject.other Pipe flow en
dc.subject.other Solids en
dc.subject.other Turbulence en
dc.subject.other Viscosity en
dc.subject.other Gravity forces en
dc.subject.other Particle dispersion en
dc.subject.other Particle wall partition en
dc.subject.other Saffman lift force en
dc.subject.other Shear lift force en
dc.subject.other Sudden expansion flow en
dc.subject.other Two phase flow en
dc.title Shear lift effects on the particle motion in two-phase sudden expansion flows en
heal.type conferenceItem en
heal.publicationDate 1994 en
heal.abstract The work investigates the effects of the shear lift force on the motion of particles in an axisymmetric sudden expansion two-phase flow laden with solid particles. Computations have been performed using a Eulerian/Lagrangian approach, considering drag, lift and gravity forces acting on a particle and accounting for particle-dispersion by turbulence and particle-wall collisions. The predictions have been performed with a modified version of the k-ε model to account for the radius of curvature of the flow. The effects of increasing particle diameter, particle density, particle mass loading and of changing the flow direction (against gravity) have been computationally investigated, based on previously obtained experimental results which were used as inlet conditions for the calculation of the particle motion. The computational results revealed that, in most cases examined, there exist regions in the turbulent sudden expansion two-phase flow where the transverse Saffman lift force attains high values and becomes the governing factor in the particle dispersion. en
heal.publisher Publ by ASME, New York, NY, United States en
heal.journalName American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED en
dc.identifier.volume 185 en
dc.identifier.spage 81 en
dc.identifier.epage 92 en


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