- variable density
- flow: vector field
- need: density (x), velocity (u), temperature(sometime)
- What affects it?
Viscosity, external force, advection, pressure
Computational fluid type:
-grid based/Eulerian(stable )
-particle based(weighted average give density, usually center at particle)
- issue: need a lot of particle, difficult to get stable
- for water, all I care about is the boundary
-water velocity based on wave length.