I feel that this featured image, which shows the Kelvin-Helmholtz phenomena, best exemplifies the best fusion between art & science flow visualization. This phenomena is all about the interaction between different fluids with different velocities, densities, and other properties causing these surreal wave-like patterns. This phenomena provides scientific interests, shedding light on dynamics of fluid behavior. It also serves as an artistic inspirations, making artists capture the creative expression. Lastly, it provides educational value because the mesmerizing aesthetic beauty allows people to appreciate the natural beauty nature provided both in the sky and on water.
Photo Credit: Photo by Rachel Gordon via BBC.com