Creation of an isolated turbulent blob fed by vortex rings

Turbulence is hard to control. Many experimental methods have been developed generate this elusive state of matter, leading fundamental insights into its statistical and structural features as well onset. In all cases, however, the material boundaries apparatus pose a challenge for understanding what turbulence has fed how it would freely evolve. Here we build control confined using elemental building blocks—vortex rings. We create stationary isolated blob in quiescent environment, initiated sustained solely by vortex assemble full picture three-dimensional structure, onset, energy budget tunability. The incoming rings can be endowed with conserved quantities, such helicity, which then controllably transferred turbulent state. Our one-eddy-at-a-time approach opens possibility sculpting flows much placing at targeted position, localizing ultimately harnessing it. generated environment blocks.