Module grid3d 

3D FDTD simulation grid for acoustic wave propagation.

Implements the 3D wave equation using finite differences: ∂²p/∂t² = c² (∂²p/∂x² + ∂²p/∂y² + ∂²p/∂z²) - γ·∂p/∂t

Uses a 7-point stencil (6 neighbors + center) for the Laplacian.

Structs

GridParams

GPU-compatible data layout for 3D grid.

SimulationGrid3D

3D simulation grid using Structure of Arrays (SoA) layout.

Enums

CellType

Cell type for boundary conditions.