Key Issues Review: Numerical studies of turbulence in stars

Abstract

The numerical simulation of turbulence in stars has led to a rich set of possibilities regarding stellar pulsations, asteroseismology, thermonuclear yields, and formation of neutron stars and black holes. The breaking of symmetry by turbulent flow grows in amplitude as collapse is approached, which insures that the conditions at the onset of collapse are not spherical. This lack of spherical symmetry has important implications for the mechanism of explosion and ejected nucleosynthesis products. Numerical resolution of several different types of three--dimensional (3D) stellar simulations are compared; it is suggested that core collapse simulations may be under-resolved. New physical effects which appear in 3D are summarized. Connections between simulations of progenitor explosion and observations of supernova remnants (SNR) are discussed. Present treatment of boundaries, for mixing regions during He--burning, requires revision.

8 pages, 1 figure, 1 table, submitted to Reports on Progress in Physics

References in corpus (13)

• Global-Scale Turbulent Convection and Magnetic Dynamo Action in the Solar Envelope
• Simulations of dynamo action in fully convective stars
• Persistent Magnetic Wreaths in a Rapidly Rotating Sun
• Structure and Evolution of Giant Cells in Global Models of Solar Convection
• Hydrodynamic moving-mesh simulations of the common envelope phase in binary stellar systems
• Hydrodynamical Neutron Star Kicks in Three Dimensions
• Energy Conservation and Gravity Waves in Sound-proof Treatments of Stellar Interiors: Part I Anelastic Approximations
• An HST Survey of the Highest-Velocity Ejecta in Cassiopeia A
• 3D hydrodynamical CO5BOLD model atmospheres of red giant stars: I. Atmospheric structure of a giant located near the RGB tip
• A Simple Model for Solar Isorotational Contours
• The Multiverse and Particle Physics
• Entropy in adiabatic regions of convection simulations
• Scaling of the asymptotic entropy jump in the superadiabatic layers of stellar atmospheres

Cited by in corpus (13)

• High Resolution Study of Presupernova Compactness
• A large fraction of hydrogen-rich supernova progenitors experience elevated mass loss shortly prior to explosion
• A Systematic Survey of the Effects of Wind Mass Loss Algorithms on the Evolution of Single Massive Stars
• 3D Hydrodynamic Simulations of Carbon Burning in Massive Stars
• Turbulence in Core-Collapse Supernovae
• 2D radiation-hydrodynamic simulations of supernova ejecta with a central power source
• Three-dimensional Hydrodynamics Simulations of Precollapse Shell Burning in the Si- and O-rich Layers
• 3D Simulations and MLT: I. Renzini's Critique
• Realistic 3D hydrodynamics simulations find significant turbulent entrainment in massive stars
• Synergies between Asteroseismology and Three-dimensional Simulations of Stellar Turbulence
• The impact of convective criteria on the properties of massive stars
• Thermal convection in rotating spherical shells: temperature-dependent internal heat generation using the example of triple-$\alpha$ burning in neutron stars
• Massive stars, successes and challenges