Flat wave


delay framerate:fps
Linear waves on 512×512 square.

2D wave equation

For the wave equation
    t2u = Δu ,     u|t=0 = exp(-(r - ro )2/ a2),     ∂t u|t=0 = 0,
the simple explicit scheme
    ux,yt+1 = 2ux,yt - ux,yt-1 + (ux+1,yt + ux-1,yt + ux,y+1t + ux,y-1t - 4ux,yt)(Δt/Δx)2
on square grid is used. See 2D flat wave for detail.
Electromagnetic wave simulation
updated 22 Oct 2013