How to write an Eulerian fluid simulator with 200 lines of code.

submitted by Alan_Crowe from (youtube.com)

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[–]Alan_Crowe[S] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

The video starts by explaining that Eulerian contrasts with Lagrangian.

Eulerian is when you have a grid, with velocity values at grid points. Then it gets into using a staggered grid, with velocity values at the midpoint of each cell wall.

Lagrangian is when you have particles, lots of particles, and interaction between them, and this video isn't about that.

The video plunges into the details. I'm guessing that it is only first order accurate, which keeps things simple. And the language is JavaScript which is widely available.