Question

A simulation for a nonlinear wave equation with noise. You can tweak many parameters. Check it out!

Answer 1

This is cool. One thing I noticed is that a perturbation near the right or left edges also affects the other side, but this doesn't happen with the top and bottom edges. It also doesn't on the R/L side if the perturbation is a bit further away. Do you know why this is?

Answer 2

Is it a stochastic PDE?

Answer 3

Definitely fun to play with.

Can you say something about your input? When tuning down all nonlinear components and damping I see ripples which I didn‘t expect if the input was impulsive.

Answer 4

What sort of spatial discretization are you using?

Answer 5

This is very cool. I notice that if i press on a single position for a while (im using my phone) it creates either a positive or negative "bubble" that seems to persist for a long time after I've removed my input. The interesting about this is, if i then cause a disturbance anywhere else the "bubble" pops. Why does this happen? Is there a time delay between my input and the bubble popping, or is there some nonlocal interaction going on?

Answer 6

This is awesome. I love that the damping from noise allows almost 3D like perspective effects to emerge. Nice work!