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src/Eulerian Fluid in 2D.md

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 # Eulerian Fluid Simulator
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+<img align="right" width="40%" margin-left="20px" src="1st_test_smoke.png"> 
 We will look at a 2D simulation here first. Moving to 3D is quite trivial. It is _Eulerian_ because we use a grid rather than points for the computations. Below, we will be mainly following the work of Matthias Müller [^1] [^2] with added details and insights from various other sources.
 
 We assume that:
 1. Water is an [incompressable fluid](https://en.wikipedia.org/wiki/Incompressible_flow).
 2. It has no [viscosity](https://en.wikipedia.org/wiki/Viscosity) (even though adding it would be rather easy).
 
 
-![alt text](1st_test_smoke.png)
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 Our velocity vector
 
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 [^AshMaster]: [Michael Ash, _"Master Thesis: Simulation and Visualization of a 3D Fluid"_, 2005](https://www.mikeash.com/thesis/thesis-en.pdf)
 
+[^YTVideo]: [The Coding Train, _"Coding Challenge #132: Fluid Simulation"_](https://www.youtube.com/watch?v=alhpH6ECFvQ)
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 ## Other Research Publications
 [^Visco]: [S. Clavet, P.Beaudoin, and P. Poulin, _"Particle-based Viscoelastic Fluid Simulation"_, ACM SIGGRAPH Symposium on Computer Animation, 2005](https://www.researchgate.net/profile/Pierre-Poulin/publication/220789321_Particle-based_viscoelastic_fluid_simulation/links/0c96051824f22359e2000000/Particle-based-viscoelastic-fluid-simulation.pdf?origin=publication_detail&_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6InB1YmxpY2F0aW9uIiwicGFnZSI6InB1YmxpY2F0aW9uRG93bmxvYWQiLCJwcmV2aW91c1BhZ2UiOiJwdWJsaWNhdGlvbiJ9fQ)