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

Founti Maria, A; Klipfel Athinodoros, S

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