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DTSTAMP:20210916T132451Z
LOCATION:Lise Girardin
DTSTART;TZID=Europe/Stockholm:20210707T140000
DTEND;TZID=Europe/Stockholm:20210707T143000
UID:submissions.pasc-conference.org_PASC21_sess149_msa149@linklings.com
SUMMARY:CRK-HACC: Next-Generation SPH Approach to Cosmological Hydrodynami
 cs
DESCRIPTION:Minisymposium\n\nCRK-HACC: Next-Generation SPH Approach to Cos
 mological Hydrodynamics\n\nHeitmann, Frontiere\n\nA challenging requiremen
 t posed by next-generation cosmological surveys is a firm theoretical gras
 p of the impact of baryons on structure formation. Hydrodynamic simulation
 s modeling gas physics are vital in this regard. A high degree of modeling
  flexibility exists in this space making it important to explore a range o
 f methods in order to gauge the accuracy of simulation predictions. In thi
 s talk we present a new approach based on Conservative Reproducing Kernel 
 Smoothed Particle Hydrodynamics (CRK-SPH). CRK-SPH utilizes a first-order 
 consistent reproducing kernel, a smoothing function that exactly interpola
 tes linear fields with particle tracers. CRKSPH retains many benefits of t
 raditional SPH methods (such as preserving Galilean invariance and manifes
 t conservation of mass, momentum, and energy) while improving on many of t
 he shortcomings of SPH, particularly the overly aggressive artificial visc
 osity and zeroth-order inaccuracy. We discuss the CRK-SPH implementation w
 ithin our cosmology framework HACC. We present results from the first cosm
 ological simulation and contrast the results with previous non-radiative s
 imulations.\n\nDomain: CS and Math, Physics
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