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SUMMARY:Dust Settling Instability in Protoplanetary Disks
DTSTART;VALUE=DATE-TIME:20200514T122000Z
DTEND;VALUE=DATE-TIME:20200514T124000Z
DTSTAMP;VALUE=DATE-TIME:20240704T115619Z
UID:indico-contribution-47@meetings.aip.de
DESCRIPTION:Speakers: Leonardo Krapp ()\nThe streaming instability has bee
 n identified as a promising mechanism to concentrate solids and promote pl
 anetesimal formation in the midplane of disks.  It has been demonstrated i
 n Squire & Hopkins (2018) that a related settling (and streaming) instabil
 ity (here SSI) occurs as particles sediment towards the midplane.  However
 \,  the ability of the SSI to concentrate solids and generate turbulence i
 s yet to be addressed. To shed light on this aspect\,  we present a system
 atic study of the saturated state of the SSI by performing a series of num
 erical simulations with the multi-fluid version of the FARGO3D code. We fu
 rthermore have extended the existing linear analysis to more realistic sce
 narios including particle size distributions and background disk turbulenc
 e.  Our findings suggest that particle clumping is too weak to trigger pla
 netesimal formation during the settling of particles\, but the SSI could g
 enerate weak levels of turbulence in otherwise nearly laminar regimes.\n\n
 https://meetings.aip.de/event/1/contributions/47/
LOCATION:Leibniz Institute for Astrophysics Potsdam (AIP) Lecture Hall
URL:https://meetings.aip.de/event/1/contributions/47/
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