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Wojciech (Vôitek) Aniszewski

@aniszewski.bsky.social
66 followers 118 following 106 posts

Scientist, CFD, numerical methods, fluid mechanics, multi-phase flows, data visualization, ancient computers... also a homegrown carpenter.

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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 25/09/2026
If you've the faintest interest in astronomy or astrophysics, you might want to totally ruin your life by setting this website as a home page in your browser: science.nasa.gov/apod/random-...
science.nasa.gov
Random APOD Generator - NASA Science
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 24/09/2026
They want you to believe the only way to change a tire is to do it in a qualified shop? Also of course, you must buy all four new tires, they must match all 4 with an electron microscope, and it needs to be on a mystery machine by a qualified mechanic. Then there's this: youtu.be/MFxxtfcjsFM?...
youtu.be
Monter un pneu sur jante sans abimer la peinture
YouTube video by Jerome Francois
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 20/08/2026
If you're a dev, and wondering what miracles AI does for you, look no more: www.youtube.com/watch?v=2ZU3...
youtube.com
I'm done coding with AI
YouTube video by Brett Codes
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 19/08/2026
EVs being characteristically amusing: youtu.be/P36YlXcOAW0?...
youtu.be
Moment EV Erupts in Flames and Explodes While Charging
YouTube video by New York Post
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 15/06/2026
Thanks to hard work of -among others- T. Menard and E. Reyes, I've been involved into this research using the Archer3D code to study particle capture. Out now: ar.copernicus.org/articles/4/2...
ar.copernicus.org
Numerical study of the collection of aerosol particles by falling deformable drops
Abstract. The free fall of a drop through gas loaded with solid particles gives rise to multiple physical interactions, which remain poorly documented, especially when the drop is no longer spherical....
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 14/06/2026
Morpheus: 'The body cannot live without the mind' Me in 1999 - yup, that figures Me in 2026 - you girls should really watch some C-Span clip.cafe/the-matrix-1...
clip.cafe
'The body cannot live without the mind' | The Matrix Clip
Watch the clip 'The body cannot live without the mind' from the movie The Matrix on Clip.Cafe. Neo:I thought it wasn't realMorpheus:Your mind makes it realNeo:If you're killed in the matrix, you die h...
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 09/06/2026
It's single-phase Tuesday again! (First one, actually). Here's some grid turbulence loosely inspired by the paper of Usama et al. (doi.org/10.1016/j.co...) calculated in Basilisk (basilisk.fr). You see volume magnitude iso-surfaces with structure shedding. Visu in Paraview.
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 08/04/2026
@esa.int isnn't marketing itself enough. All the world praises only NASA for the Artemis mission, even though the European Service Module (which is like half of the ship, good luck flying w/o it) is visible in almost all mission shots... (that circular thing to the left of the Moon here). Humanity.
The ESM visible during the Artemis 2 mission.
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 30/03/2026
As I'm sure nobody has any idea about: 15y ago I have designed the cover of the ERCOFTAC (#ERCOFTAC) bulletin. (The graphic, seen below, has the color-manipulated foaming waters of the Polish Oder river.) As I have just been asked to redesign it, here's a goodbye look. New one premieres soon!
Cover image of the ERCOFTAC bulleting (with a fictional issue number coming from 2029). The image shows a color-manipulated turbulent flow.
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 30/01/2026
Second stage of the Chinese rocket ZQ-3 R/B is scheduled for an uncontrolled reentry today. Latest trajectory estimates touch Denmark and Poland. To add weight to the situation: it comes in at 11 tons, bus sized, and can hit land... www.eusst.eu/newsroom/new... newsukraine.rbc.ua/news/uncontr...
eusst.eu
EU SST closely monitors upcoming re-entry of space object ZQ-3 R/B
Due to its inclination of approximately 56.94 degrees, the object can re-enter within a latitude band of ±57 degrees, covering a vast area of the Earth's surface, although most of it is ocean or uninh...
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 23/12/2025
On an unrelated note, here's water coating a perforated solid at Re=46. There's a high-Re air coflow too, eventually a film is established though. Such processes take place e.g. in cooling towers's heat exchangers. Fresh out of the oven, simulated in Basilisk.
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 23/12/2025
Today, I replaced a leaky/cracked adapter in the hot water outlet of a 300l boiler. I wonder what motivated whomever had previously decided to install this part made of... plastic. (Makes for a great non-AMD Threadripper, if you catch my drift). Darn, AI ain't replacing no plumbers I tell you.
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 28/10/2025
Is that a Petri Dish? No, it's viscous liquid in an (unnecessarily violent) rotational flow inside a solid cylinder. Color is vorticity. Simulation in Basilisk (www.basilisk.fr and bview).
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 27/10/2025
BTW, fixed a car radio. Off the bat I hear some rattling in it, and inside I discover ...4 euro coins (see? fixing stuff *does* pay off!), turns out prev owner's kids used the CD slit "as a vending machine"... A coin stuck in the CD changer's magnet, others were randomly shorting the circuit. Nice.
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 09/10/2025
Note to self: using LLMs (colloquially known as "AI") as ChatGPT for creative tasks such as writing *does*, after all, decrease your brain activity (colloquially "make you stupid"). Take it from the MIT: www.media.mit.edu/publications... (The link has both an arXiv paper and YT vid.)
media.mit.edu
Your Brain on ChatGPT: Accumulation of Cognitive Debt when Using an AI Assistant for Essay Writing Task – MIT Media Lab
This study explores the neural and behavioral consequences of LLM-assisted essay writing. Participants were divided into three groups: LLM, Search Engine, and …
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 28/09/2025
Made this cabinet, on and off over the last 7 mo. As usual, *all* wood is palette/garbage/dumpster_finds. So its cost was 0 (but the man-hours would take you back some 4k€ easily). Some tech infos in the image alt-texts. Had tons of fun - and that's why it was made. #DIY #woodworking
The newly made cabinet (on the left). This is the painted furniture with four visible drawers, placed below a tabletop. Portions of the image are blurred.Three shots of the wooden cabinet. (Left) the pine crate with four drawers (no side walls), some of them partially drawn. The center image has the side walls (palette wood pine/spruce) and drawers inserted. The third image (on the right) has the cabinet w/o drawers, with a fresh coat of paint (parts of the interior have transparent varnish).A montage showing one of the four drawers I made for the project. I started with two large drawers found in a dump. Each of them was cut in half, resulting in four new drawers; these needed reconstructed walls as shown here, same goes for the wallnut fronts. Also, keyholes had to be made/remade and new locks bought. An old keyhole is visible above in the insert. While this one was re-filled and cemented, I made 4 of new such lock-nests in different locations...Four images showing: the dovetail joint used in the crate (Upper-left), the assembled crate with two inner walls (upper-right), the crate while fitting drawer rails (lower-left), the cabinet design in Blender (lower-right).
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 02/09/2025
Mainstream media takes stories like: dx.doi.org/10.1139/apnm-2023-0594, and runs FAR with them ("meat is good for you!"). Risky. A talented statistician can use NHANES data even to prove the existence of Atlantis. Oh, and the work is sponsored by National Cattlemen’s Beef Association. No kidding!
dx.doi.org
Animal and plant protein usual intakes are not adversely associated with all-cause, cardiovascular disease–, or cancer-related mortality risk: an NHANES III analysis
We used data from NHANES 1988–1994 to examine associations between animal and plant protein usual intakes and IGF-1 concentration with mortality from all causes, cancer, and cardiovascular disease (CV...
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 03/07/2025
Witnessed a skirmish with an anti-nuclear activist about what the lack of river/sea water means for a plant (coal vs nuclear). He says: "obviously, the coal plants do NOT use water for anything, while the nuclear do". Humanity is lost
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 10/06/2025
The 1926 silent movie "The Johnstown Flood" showcased hundreds of early proofs of why fluid mechanics breaks your SFX. E.g. in this composite (~100y ago!) shot,we see a miniature flood,matchsticks pretending to be tree logs, people (rotoscoped in) and ...droplets with d=15cm. Good luck with that!
A still frame from the 1926 movie "The Johnstown Flood". This image shows a composite of miniatures, people (near the bottom-left, superposed over the miniature footage). The special effect is "broken" by the fact that the omnipresent water doesn't "behave" to scale, we get e.g. a huge, applie-sized droplets circled in the image. In Earth gravity, water won't create such forms, thus breaking the illusion.
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 22/05/2025
Some 9mo ago I made a desk cabinet (I twitted about it here: x.com/echo_dancers... ). Now, I'm preparing it's left-hand-side brother, which due to a higher degree of complication, needs come prototyping in 3D...
a 3D rendering (in Blender) of a cabinet made of wood (the so-called "exploded view")
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 11/05/2025
Ever thought you're living in a historic era of the breakthrough of the electric car? Well, no. Check out this Detroit Electric (prob. model 47). They used plug-in charging (pictured), had >300km range (in tests) at ~32km/h. And more style than a 'Tessler'. en.wikipedia.org/wiki/Detroit...
A Detroit Electric car during plug-in charging at an American home in the 1910s.
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 05/05/2025
2018, 2035, 2050. What do these dates have in common?
spider.seds.org
Mars Oppositions
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 22/04/2025
In around 2012, I have consciously given up on smartphones. Unprompted I won't evangelize you on why I did that, but attention management was a part of it. So while I have zero need to read it, I smiled at Hayes's book 'The Siren's Call' (tinyurl.com/8p6rznbt). Go Chris, heal some binge-scrollers.
tinyurl.com
The Sirens' Call: How Attention Became the World's Most Endangered Resource
The Sirens' Call: How Attention Became the World's Most Endangered Resource [Hayes, Chris] on Amazon.com. *FREE* shipping on qualifying offers. The Sirens' Call: How Attention Became the World's Most Endangered Resource
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 26/03/2025
Gratulacje dla nowo upieczonej panie doktor.
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 11/03/2025
Today I learned: "Theodore von Karman was mainly known as a constructor of the Bell X-1 aircraft". Luckily, I can edit Polish Wikipedia...
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Reposted by Wojciech (Vôitek) Aniszewski
Morten Morland @mortenmorland.bsky.social · 02/03/2025
Sunday’s @thetimes.com cartoon times.newsprints.co.uk/morten-morla...
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 05/02/2025
On Dec 2nd, @esa.int premiered this breathtaking montage of Sentinel-2 photos. Titled "Journey to Liverpool" it also carries a - somewhat experimental - soundtrack by Robert del Naja of Massive Attack. youtu.be/KenY5M2lH2E?...
youtu.be
A Journey to Liverpool. ESA x 3D (Massive Attack)
YouTube video by ESA Extras
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 08/01/2025
Another one of my photos got hit by Flickr's "explore" algorithm. Strange, got 0 hits for 15 years an now two over a month or so. This one: www.flickr.com/photos/30500...
flickr.com
[p125] Merge with dust
Just remembered I had this on the wall once. A beautiful memory (and those don't share well...). So this was taken with my then all-around camera, Zenith 12XP and it's default Helios 50mm, on a cheapo...
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 03/01/2025
Getting a new agenda for 2025 meant a look at the 2024 one - and the previous one too. Here's four picks of my fav pages. See if you can spot just why I don't use Google Calendar... (11/03/2023, 05/06/2023, 05/17/2024, 12/10/2024)
an image from a paper notebookimage from a paper notebookimage from a paper notebookimage from a paper notebook
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 27/12/2024
I love 1-bit graphics. This excellent illustration - from Akio Tomiyama's 1998 invited talk given at the ICMF'98 in Lyon - shows just about what you need to know about a given bubble plume (and, granted, nothing more).
A black & white (1-bit) image of a series of bubble plumes
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 26/12/2024
Science is strange sometimes. On one hand, 95% of scientists will agree with the article I cite here. www.experimental-history.com/p/the-rise-a... On the other hand, however, 95% of job applications is rejected because the candidate has not enough peer-reviewed papers. Go figure.
experimental-history.com
The rise and fall of peer review
Why the greatest scientific experiment in history failed, and why that's a great thing
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 10/12/2024
Of course I've seen such situations, even in France. Can't even say I'm outraged or something. What hurts, is a situation when one of the couple is stellar (and would win any position in a contest) but the spouse is far less so, so they rig the contest for the latter. bsky.app/profile/ibog...
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 21/11/2024
Splashy here is what we get if we continue the Basilisk simulation I posted an animation of some days ago. Here, rendered with Blender, and then some...
A liquid jet splashing into a rotating solid, colored
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Wojciech (Vôitek) Aniszewski @aniszewski.bsky.social · 14/11/2024
A liquid (think, oil) jet, pretty laminar (Re approx 170, We=2500) crashes with a rotating wall (think, hot solid, to cool it down); splashing around and then slowly coating it. Heat transfers are there, but invisible in the vid... Simulated in Basilisk, visu in Bview, ffmpeg and some Bash...
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