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SUMMARY:Hydrodynamical simulations of protoplanetary disks including irrad
 iation of stellar photons. I. Resolution study for vertical shear instabil
 ity - Lizxandra Flores-Rivera - MPIA\, Heidelberg
DTSTART:20210215T140000Z
DTEND:20210215T150000Z
UID:TALK154036@talks.cam.ac.uk
CONTACT:Cleo Loi
DESCRIPTION:In recent years hydrodynamical (HD) models have become importa
 nt to describe the gas kinematics in protoplanetary disks\, especially in 
 combination with models of photoevaporation and/or magnetically driven win
 ds. Our aim is to investigate how  vertical shear instability (VSI) could 
 influence the thermally driven winds on the surface of protoplanetary disk
 s. In this first part of the project\, we focus on diagnosing the conditio
 ns of the VSI at the highest numerical resolution ever recorded\, and sugg
 est at what resolution per scale height we obtain convergence. At the same
  time\, we want to investigate the vertical extent of VSI activity. Finall
 y\, we determine the regions where extreme UV (EUV)\, far-UV (FUV)\, and X
 -ray photons are dominant in the disk. We perform global HD simulations us
 ing the PLUTO code. We adopt a global isothermal accretion disk setup\, 2.
 5D (2 dimensions\, 3 components) which covers a radial domain from 0.5 to 
 5.0 and an approximately full meridional extension. Our simulation runs co
 ver a resolution from 12 to 203 cells per scale height. The results that I
  will be showing in this talk\, highlight the importance of combining phot
 oevaporation processes in the future high-resolution studies of turbulence
  and accretion processes in disks.
LOCATION:Online
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