Wiktionary
microturbulence
n. turbulence on a small scale.
Wikipedia
Microturbulence
Microturbulence is a form of turbulence that varies over small distance scales. (Large-scale turbulence is called macroturbulence.)
Usage examples of "microturbulence".
Morrison noticed one corpuscle drifting slowly toward the ship, carried perhaps by a bit of microturbulence or by a random push of Brownian motion.
If the microturbulence generated by the flow through the needle rips the tubules from a few thousand cameras, it doesn’t matter.