Kelvin-Helmholtz Instability
The figure below shows the numerical simulation results of KH instability, with different colors used to distinguish the two different fluids
1D. Lecoanet, M. McCourt, E. Quataert, K. J. Burns, G. M. Vasil, J. S. Oishi, B. P. Brown, J. M. Stone, R. M. O'Leary, A validated non-linear Kelvin–Helmholtz benchmark for numerical hydrodynamics, Monthly Notices of the Royal Astronomical Society, Volume 455, Issue 4, 01 February 2016, Pages 4274-4288.
2Burns, Keaton & Vasil, Geoffrey & Oishi, Jeffrey & Lecoanet, Daniel & Brown, Benjamin. (2020). Dedalus: A flexible framework for numerical simulations with spectral methods. Physical Review Research. 2. 10.1103/PhysRevResearch.2.023068.