i wanna speed up my solver!

Maciej Matyka

hi.

my MAC based incompressible fluid solver is finished, but... it is not very fast. at the moment im searching any methodts to speed up them.

i read an paper by fostern (metatax or something like that) - he wrote than is easy way to speed up computations - just replace viscosity by viscosity(dt) function. that function will return minimal, but >= real viscosity for local fluid velocities (U[i][j] - U[i-1][j]). Is that good way to optimize code? Anybody have done these function? Is that means never halve dt, only make viscosity large?

/// maq