What is SPH?

Smoothed-particle hydrodynamics (SPH) is a computational method used for simulating fluid dynamics. It is a Lagrangian meshfree method, meaning that instead of dividing the simulated space into a grid, the fluid is represented by a set of particles, each of which carries individual physical properties such as mass, velocity, and energy. These particles interact with each other based on their proximity, approximating the fluid's behavior. SPH is commonly used in astrophysics, ballistics, and computer graphics for simulating phenomena such as explosions, fluid flows, and deformable bodies.