Bram Cohen asks: could a Navier-Stokes counterexample actually be built with pumps and vibrations?

bramcohen · x · 2026-09-17

BitTorrent creator Bram Cohen poses a cross-disciplinary question about Navier-Stokes counterexample constructions: could one actually be built physically — say, using pumps or vibrations in a fluid system to cause intense pressure buildup at a specific point?

The question drew responses from fluid dynamics researchers discussing the instability of blow-up structures and the impracticality of controlling initial conditions precisely enough. A rare exchange bridging the mathematical regularity/blow-up problem for Navier-Stokes and real-world engineering feasibility.

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