Dynamical Barmode Instability

Simulation Technique
  • Governing Equations for CFD Simulations
  • Explicit Time-Integration
  • Finite-Difference Scheme
    • Uniform, Cylindrical Lattice (no AMR)
      [ Cazes' work (128,256,128) in (R,q,Z) ]
      [ Shangli Ou's work (256,256,162) in (R,q,Z) ]
    • Rotating Frame
    • van Leer Advection [ a la ZEUS-2D ]

LSU: SuperMike
Initial Equilibrium Configurations
  • HSCF technique
  • Differentially rotating, axisymmetric, n=3/2 polytrope
    • n'= 0
    • Uniform vortensity (ratio of vorticity to surface density)
    • T/|W| = 0.28
  • Perturbation: Random or barlike

Simulation Results

Title Page