Turbulence and mechanism of resistance on spheres and cylinders
A 1932 technical report from NASA's Technical Reports Server, a scientific study of fluid turbulence and drag on spheres and cylinders, aimed at engineers and researchers. Its pictures are halftone photographs of flow patterns behind a circular obstacle, showing swirling streaks, and one line drawing of streamlines with eddies, which a designer might use for abstract textures or diagrams of fluid motion.
