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Minhui Zhu

@minhui-zhu.bsky.social

Reposted by Minhui Zhu

Nigel Goldenfeld @nigelgoldenfeld.bsky.social · 18/02/2026

🧪⚛️ Ever wondered what would happen if you thrashed around in a water tank, creating a blob of turbulence, and then watched it spread and gradually dissipate energy? So did we. But we did the experiment, now out in PNAS and on the cover! It only took us 7 years ... www.pnas.org/doi/10.1073/...

Pictured are 3D trajectories of turbulent particles colored by speed, showing two large vortices. Takumi Matsuzawa, Minhui Zhu et al. observed the expansion and decay of a blob of turbulence created in the center of a tank of still water. The results revealed steep fronts separating turbulent and undisturbed regions, the nonlinear transport and decay of the turbulent blob, and a persistent signature of turbulence late into the decay process. According to the authors, the analysis could help provide insight into processes ranging from star formation to fusion reactors. See the article by Matsuzawa, Zhu et al. e2526858123. Image credit: Takumi Matsuzawa.

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Reposted by Minhui Zhu

Nigel Goldenfeld @nigelgoldenfeld.bsky.social · 24/01/2025

⚛️🧪🧵 @minhui-zhu.bsky.social and I wondered how to calculate anomalous dimensions in partial differential equations with higher accuracy than is given by conventional perturbative renormalization group, as described in my book and other papers from 30+ years ago. The result: doi.org/10.1103/Phys...

doi.org

Self-consistent expansion and field-theoretic renormalization group for a singular nonlinear diffusion equation with anomalous scaling

The method of self-consistent expansions is a powerful tool for handling strong coupling problems that might otherwise be beyond the reach of perturbation theory, providing surprisingly accurate appro...

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