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SUMMARY:Turbulence and Dust Dynamics in Protoplanetary Disks with Vertical
  Shear Instability - Thomas Pfeil (LMU)
DTSTART:20210302T130000Z
DTEND:20210302T140000Z
UID:TALK155890@talks.cam.ac.uk
CONTACT:Dr Can Cui
DESCRIPTION:Turbulence has a profound impact on the evolution of gas and d
 ust in protoplanetary disks (PPDs)\, from driving the collisions and the d
 iffusion of dust grains\, to the concentration of pebbles in giant vortice
 s\, thus\, facilitating planetesimal formation. The Vertical Shear Instabi
 lity (VSI) is a hydrodynamic mechanism\, operating\nin PPDs if the local r
 ate of thermal relaxation is high enough. Previous studies of the VSI have
 \, however\, relied on the assumption of constant cooling rates\, or negle
 cted the finite coupling time between the gas particles and the dust grain
 s. Here\, I present the results of hydrodynamic simulations of PPDs with t
 he PLUTO code that include a more realistic thermal relaxation prescriptio
 n. This enables us to study the turbulence and flow structure formation ca
 used by VSI in the optically thick and optically thin parts of the disk un
 der consideration of the thermal dust-gas coupling.
LOCATION:ONLINE - Details to be sent by email
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