G-equation model

The G-equation model is a mathematical tool used to describe how flames spread in combustion processes. It treats the flame front—the boundary between burnt and unburnt gases—like a moving surface that propagates through space. Instead of simulating every detail of the flames, the G-equation focuses on tracking this front's shape and speed, considering factors like flow turbulence and fuel properties. This approach helps engineers predict how flames evolve in engines, turbines, or explosions, enabling safer and more efficient designs without complex, resource-intensive detailed simulations.