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Real-Time Fluid Dynamics for Games - Dynamic Graphics …

Real-Time Fluid Dynamics for Games Jos Stam Alias | wavefront 210 King Street East Toronto, Ontario, Canada M5A 1J7 Email: Url: Abstract In this paper we present a simple and rapid implementation of a Fluid Dynamics solver for game engines. Our tools can greatly enhance Games by providing realistic Fluid -like effects such as swirling smoke past a moving character. The potential applications are endless. Our algorithms are based on the physical equations of Fluid flow, namely the navier -Stokes equations. These equations are notoriously hard to solve when strict physical accuracy is of prime importance. Our solvers on the other hand are geared towards visual quality. Our emphasis is on stability and speed, which means that our simulations can be advanced with arbitrary time steps.

the air.The Navier-Stokes Equations are a precise description of the evolution of a velocity field over time. Given the current state of the velocity and a current set of forces, the equations tell us precisely how the velocity will change over an infinitesimal time step. Figure 1 (top) depicts these equations in a compact vector-like notation.

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