Setup for Red Supergiant

• Computational domain: cube, edge length 2027 R_Sun, 235³ points
  
• Gravitation: spherical 1/r potential, smoothed in the center
• Energy source: within a sphere of radius r₀=135 R_Sun
• Outer boundaries: open, transmitting for shock waves
• Parameters for model st35gm03n06:
  • solar composition
  • M_star = 12 M_Sun
  • L_star = 89000 - 100000 L_Sun
  • T_eff = 3436 K
  • logg = -0.38 (cgs units)
  • R_star = 875 R_Sun