BEGIN:VCALENDAR

VERSION:2.0

PRODID:-//wp-events-plugin.com//6.6.4.4//EN

TZID:Asia/Jerusalem

X-WR-TIMEZONE:Asia/Jerusalem
BEGIN:VEVENT

UID:0-220@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20210929T133000

DTEND;TZID=Asia/Jerusalem:20210929T143000

DTSTAMP:20230403T143650Z

URL:https://aerospace.technion.ac.il/events/hydrodynamic-stability-of-mult
 i-phase-shear-flows-laden-with-interacting-particles/

SUMMARY:Hydrodynamic stability of multiphase shear flows laden with interac
 ting particles
DESCRIPTION:Lecturer:Zhixuan Liu\n Faculty:Department of Aerospace Engineer
 ing\n Institute:Technion – Israel Institute of Technology\n Location:Cla
 ssroom 165\, ground floor\, Library\, Aerospace Eng. & https://technion.zo
 om.com.cn/j/7152833139\n Zoom: \n Abstract: \n Details: \n Multiphase flow
 s laden with interacting polydisperse particles are frequently encountered
  in aerospace propulsion\, atmospheric flows\, as well as in environmental
  and medical applications. The stability characteristics of such flows can
  experience drastic changes compared to their clean state due to inter-pha
 se and inter-particle heat and mass transfer. Disperse particulate matter 
 has been found to alter the onset of laminar to turbulent transition and l
 ead to modulation of turbulence in multiphase flows. Saffman (1962) conduc
 ted the first linear stability analysis of particle-laden shear flows and 
 proposed that the addition of fine dust either stabilizes or destabilizes 
 the carrier gas flow depending on the particles’ relaxation time scales 
 relative to the carrier flow time scale. Numerical simulations of multipha
 se flows that involve tracking each interacting particle in a Lagrangian f
 ramework require extreme computational resources and are thus limited for 
 the study of stability. The complexity of such flows is further increased 
 when interactions such as droplet evaporation\, coalescence\, breakup\, et
 c.\, are considered.\nTo extend current hydrodynamic stability theories in
  multiphase flows and analytically resolve interacting polydisperse partic
 les\, we revisit Saffman’s theory for dusty gas flows and develop a new 
 generalized mathematical framework by combining a linear stability analysi
 s and a discrete Eulerian formulation for the flow and dispersed matter. I
 n this talk\, we will introduce the generalized mathematical framework and
  present the stability characteristics of multiphase flows involving diffe
 rent shear flow configurations: Polydisperse Channel flows and Polydispers
 e evaporating pipe flows at low and high Reynolds numbers and various part
 iculate matter loadings.  Finally\, we discuss the specific mechanisms re
 sponsible for the onset of instability in each particle-laden flow case.\n
 link to Zoom
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng. & https://
 technion.zoom.com.cn/j/7152833139

END:VEVENT

BEGIN:VTIMEZONE

TZID:Asia/Jerusalem

X-LIC-LOCATION:Asia/Jerusalem

BEGIN:DAYLIGHT

DTSTART:20210326T030000

TZOFFSETFROM:+0200

TZOFFSETTO:+0300

TZNAME:IDT

END:DAYLIGHT

END:VTIMEZONE
END:VCALENDAR