Table 4 Calculation settings
From: Effect of projectile shape and interior structure on crater size in strength regime
Parameters and settings* | Values |
|---|---|
Computational geometry | Cylindrical coordinate |
Number of computational cells in the R direction | 2000 |
Number of computational cells in the Z direction | 3000 |
Number of cells for the extension in the R direction | 400 |
Number of cells for the extension in the Z direction | 400 |
Extension factor | 1.02 |
Grid spacing (m/grid) | 10–5 |
Artificial viscosity a1 | 0.24 |
Artificial viscosity a2 | 1.2 |
Impact velocity (km/s) | 2.0 |
High-speed cutoff | Twofold impact velocity |
Low-density cutoff (kg/m3) | 100 |