Nigel Dhlamini

We must risk delight | Distracted Fluid Dynamicist | Lecturer | PhD Candidate (UCT) | Pre-revenue | Anhedonic |Yearner | Jazz | Joburg | Poetry | MUFC | Be kind

[Nigel Dhlamini @nigelchuck]

Just watched The Invite, best movie this year.

[mpho a. ndaba 🌘🌻 @manofcolor_]

the researcher _________________the research
link: https://t.co/CJ1XCaOzwP

[Nigel Dhlamini @nigelchuck]

The researcher. The research: https://t.co/YrKcuEeleG

[Khanya Thembane @noksy_k]

The researcher 👩‍🔬 The research 🔬

[Chris Combs (iterative design enjoyer) @DrChrisCombs]

Some thoughts on the Navier-Stokes news from a professor of aerospace engineering:
1) take a deep breath
2) posts indicating we "solved Navier-Stokes" are incorrect and overblown. A very specific mathematical proof involving a niche scenario for Navier-Stokes has *potentially* been shown (that a perfectly smooth incompressible initial condition with finite energy could produce a singularity--note the assumptions here piled on to an equation set that already involves some assumptions).
3) there is no general closed form solution for N-S and that's not what this news is about
4) this is more of a mathematical curiosity than anything else and could matter a lot to mathematicians but basically changes nothing in the way N-S are used in practice
5) there are already very useful exact solutions to Navier-Stokes that greatly simplify the equation set with the right boundary conditions/geometry like laminar flow through a pipe or a 2D Taylor-Green vortex
6) in aerospace, we already treat N-S as an approximation in many instances and are well aware of its limitations. we don't outright solve these equations anyway and regularly chop off terms or simplify parts (at the expense of accuracy) to make them easier to deal with.
7) to be honest I have never found this specific problem to be particularly interesting because we know a core assumption of N-S is a "continuum" fluid where you ignore molecules and assume hydrodynamic scales >>> molecular scales. We know a real fluid cannot have infinite velocity or energy. But clearly you can push equations outside of their bound of validity and make them produce funky results and singularities.

[Nigel Dhlamini @nigelchuck]

Seeing rumours OpenAI have solved Navier-Stokes?! (Also, accompanying rumors about their model "stealing" the method from a user).

[Nigel Dhlamini @nigelchuck]

I want to play "The Researcher" and "The Research" but I just simply do not have a picture of myself. Nothing from the last five or so years anyway. Lol.

[Manchester United @ManUtd]

The best player in the @PremierLeague.

[Nigel Dhlamini @nigelchuck]

Bruno hat trick! Football is back! #mufc

[Chris Combs (iterative design enjoyer) @DrChrisCombs]

Talk about FL 0 goodness gracious

[Nigel Dhlamini @nigelchuck]

Now have to figure out how to make it into an assignment question for my students.

[Nigel Dhlamini @nigelchuck]

The aerodynamics of flying in the atmospheric boundary layer in a flyover are interesting: the thermal updrafts from the sun-baked concrete and a filled stadium, and the unstable shear layer micro-turbulence. Impressive skill from the pilots.

[Nigel Dhlamini @nigelchuck]

@nc_frey Verification of PIs from the global South not as simple. Can't you detect who is already using Claude for scientific work, and then maybe verify their affiliation via institutional email?

[Nigel Dhlamini @nigelchuck]

Some light night time reading of our recent work --- https://t.co/YrKcuEeleG

[Nigel Dhlamini @nigelchuck]

@sabzsgizo Buya eKapa kuqala, inathelwa ngapha.

[Nigel Dhlamini @nigelchuck]

My favourite band is back, and they are still brilliant.

[Nigel Dhlamini @nigelchuck]

Co-author nitpicking the proof, "this will just delay the publication, they can't take back acceptance because we are annoying." But you're annoying me too, and delaying my birthday gift to myself. Argh, can't wait to practise solitude in academia too.

[Nigel Dhlamini @nigelchuck]

Glad United's Kobbie and Rashy are not part of this.

[Nigel Dhlamini @nigelchuck]

That's it.

[Nigel Dhlamini @nigelchuck]

Now they need another goal but Tuchel has packed defenders