Modeling Fluid Phenomena. Vinay Bondhugula (25 th & 27 th April 2006). Two major techniques. Solve the PDE describing fluid dynamics. Simulate the fluid as a collection of particles. Rapid Stable Fluid Dynamics for Computer Graphics – Kass and Miller SIGGRAPH 1990. Previous Work.
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(25th & 27th April 2006)
2) Ignore the vertical component of the velocity of water.
Inaccurate simulation for steep waves.
3) Horizontal component of the velocity in a column is constant.
Assumption fails in some cases:
The second term is the horizontal force acting on a water column.
Water flowing down a hill…
Wave speed depends on the depth of the water…
Limitations of grid based simulation:
But, mass conservation is anyway guaranteed in a particle system.
p = k*r, where k is a constant which depends on the temperature.
all points inside a radius of ‘h’ are considered for “smoothing”.