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200 Lines of Python beats $50M supercomputer – Navier-Stokes at Re=10⁸ [pdf]

https://philpapers.org/archive/CAMIIA-3.pdf
10•jcamlin•27m ago

Comments

jcamlin•27m ago
The secret: T³ periodic domain + Fourier orthogonality = the weak solution is just a curve in coefficient space. Not a field. A curve. Temporal lifting samples that curve densely where it bends hardest. Standard DNS crashes from CFL blowup. This doesn't - because we're not fighting the geometry, we're riding it. Results:

Taylor-Green Re=10⁵: BKM=37.1, stable through full vortex-stretching cascade Kolmogorov Re=10⁸: 0.07% dissipation error 128³ grid → 411³ effective resolution (spectral super-resolution from temporal oversampling) Hardware: 8GB laptop, no GPU

No artificial dissipation. No hyperviscosity. Unmodified Navier-Stokes unlike all other DNS. GitHub link to code and data in the paper (linked)

doctorpangloss•8m ago
> because we're not fighting the geometry, we're riding it

Don’t let ChatGPT write summaries for you (please edit the comment to be real)

bediger4000•5m ago
What's the significance of those particular Reynold's numbers? 10^8 seems high for incompressible flow, but maybe I misread something.
MetaConvert•21m ago
I like the idea behind this. Thanks to the author.
mkeeter•1m ago
The publisher describes itself as “Fusion of Researcher and AI: Independent publisher of peer-reviewed research in post-biological epistemics“

Is there any reason to believe this isn’t an AI-assisted crank publication?

Dynamic and Parametric Retrieval-Augmented Generation

https://arxiv.org/abs/2506.06704
1•felineflock•2m ago•0 comments

The Declining Success of Civil Resistance (2024) [video]

https://www.youtube.com/watch?v=iDWyOMZdiBk
2•Intralexical•3m ago•0 comments

Show HN: Dante-Qwen-4B – Curing LLM "Neurosis" with a Divine Comedy Curriculum

https://huggingface.co/hunterbown/dante-qwen-4b
1•hunterbown•6m ago•1 comments

Show HN: Oblit – A zero-dependency, binary-first protocol for Node.js (Show HN

3•_melikeymen_•6m ago•0 comments

Scientists identify the evolutionary "purpose" of consciousness

https://scitechdaily.com/scientists-identify-the-evolutionary-purpose-of-consciousness/
1•amanaplanacanal•6m ago•0 comments

Social media research tool lowers the political temperature

https://news.stanford.edu/stories/2025/11/social-media-tool-polarization-user-control-research
1•quadtree•6m ago•0 comments

Rethinking Duplication

https://medium.com/@HobokenDays/rethinking-duplication-c1f85f1c0102
1•HideInNews•7m ago•0 comments

Anti-patterns while working with LLMs

https://instavm.io/blog/llm-anti-patterns
2•mkagenius•7m ago•0 comments

C++ Web Server on my custom hobby OS

https://oshub.org/projects/retros-32/posts/getting-a-webserver-running
4•joexbayer•8m ago•2 comments

The Unexpected Effectiveness of One-Shot Decompilation with Claude

https://blog.chrislewis.au/the-unexpected-effectiveness-of-one-shot-decompilation-with-claude/
5•knackers•16m ago•1 comments

Bringing Sexy Back. Internet surveillance has killed eroticism

https://lux-magazine.com/article/privacy-eroticism/
9•eustoria•18m ago•0 comments

Matrix Core Programming on AMD CDNA4 Architecture

https://rocm.blogs.amd.com/software-tools-optimization/matrix-cores-cdna/README.html
2•salykova•18m ago•0 comments

Computer Says No:O

1•Pocomon•21m ago•0 comments

Apple and Intel Rumored to Partner on Mac Chips

https://www.macrumors.com/2025/11/28/intel-rumored-to-supply-new-mac-chip/
24•bigyabai•23m ago•1 comments

Who wins when we filter the open web through an opaque system?

https://hidde.blog/filtered-open-web/
2•ChrisArchitect•23m ago•0 comments

Go Proposal: Goroutine Metrics

https://antonz.org/accepted/goroutine-metrics/
4•blenderob•24m ago•0 comments

The Idiot Sandwich – On Embedding Alt Text

https://shkspr.mobi/blog/2025/11/the-idiot-sandwich-on-embedding-alt-text/
2•blenderob•25m ago•0 comments

200 Lines of Python beats $50M supercomputer – Navier-Stokes at Re=10⁸ [pdf]

https://philpapers.org/archive/CAMIIA-3.pdf
10•jcamlin•27m ago•5 comments

Hacker News AI newsletter – weekly round up of the most popular AI links from HN

https://hackernewsai.com
3•alexgotoi•27m ago•3 comments

So you wanna build a local RAG?

https://blog.yakkomajuri.com/blog/local-rag
6•pedriquepacheco•29m ago•0 comments

Happiness research doesn't make you happy

https://www.technotheoria.org/p/happiness-research-doesnt-make-you
2•paulpauper•31m ago•0 comments

Lowtype: Elegant Types in Ruby

https://codeberg.org/Iow/type
6•birdculture•33m ago•1 comments

New version of HugstonOne with Qwen Next 80B support and Memory

https://github.com/Mainframework/HugstonOne/releases/tag/HugstonOne_Enterprise_Edition_with_memory
1•trilogic•33m ago•0 comments

The Neoliberal Era Was Not Pro-Market Enough

https://www.richardhanania.com/p/the-neoliberal-era-was-not-pro-market
4•paulpauper•34m ago•1 comments

Airloom – 3D Flight Tracker

https://objectiveunclear.com/airloom.html
9•azinman2•34m ago•1 comments

Beads_viewer: Keyboard-driven terminal interface for the Beads issue tracker

https://github.com/Dicklesworthstone/beads_viewer
2•latchkey•38m ago•0 comments

Shrinking While Linking

https://www.tweag.io/blog/2025-11-27-shrinking-static-libs/
1•synergy20•38m ago•0 comments

(Digital) Elbows Up

https://pluralistic.net/2025/11/28/disenshittification-nation/
3•hn_acker•40m ago•0 comments

Lobsters Interview

https://susam.net/my-lobsters-interview.html
1•blenderob•41m ago•0 comments

Useful Black Friday dev resources I came across today

https://github.com/greatfrontend/black-friday-cyber-monday-deals
3•demon1421•43m ago•0 comments