SPH Fluid Simulation
An interactive real-time fluid simulation using Smoothed Particle Hydrodynamics (SPH), a particle-based approach to simulating fluid dynamics.
About
SPH (Smoothed Particle Hydrodynamics) is a computational method for simulating fluids using particles instead of traditional grid-based approaches. Each particle represents a small volume of fluid, and the simulation calculates forces between nearby particles to model realistic fluid behavior including:
- Pressure forces
- Viscosity
- Surface tension
- Gravity and external forces
This implementation is based on the seminal paper “Particle-Based Fluid Simulation for Interactive Applications” by Matthias Müller, David Charypar, and Markus Gross, which made real-time fluid simulation accessible for games and interactive applications.
Features
- Real-Time Simulation - Interactive particle-based fluid dynamics
- Physics Accuracy - Based on peer-reviewed research
- Particle-Based Approach - More flexible than grid-based methods
- Visual Feedback - Watch fluid particles interact in real-time
Technical Details
The simulation uses SPH kernels to approximate fluid properties at each particle’s location by weighted averaging of nearby particles. This allows for:
- Natural handling of free surfaces
- Conservation of mass
- Adaptive resolution (more particles = higher detail)
- Efficient computation for interactive rates
Technologies Used
- Rust - High-performance systems programming
- ggez - Game engine for graphics and interaction
- SPH Algorithm - Particle-based fluid dynamics
- Physics Simulation - Navier-Stokes equations approximation