🌀 Dyson Detect Green Laser in the Dark 🌌 (Satisfying Cleaning!)" @stuffzoom

Uploaded December 2024 | Updated September 2026, 1 hour ago

Get ready for the most satisfying vacuuming video you’ve ever seen! 😍 I take the Dyson V15 Detect with its epic green laser into a pitch-black room to uncover the hidden world of dust. 🌌

Watch as the laser reveals every particle on the floor, and the Dyson’s powerful suction devours it all in one go. From crumbs to invisible dust, NOTHING escapes this vacuum. It’s oddly satisfying to see the dirt disappear in real time.

This is the ultimate cleaning ASMR video you didn’t know you needed. Perfect for anyone who loves tech, home gadgets, or just wants to watch dust get obliterated.

🔔 Don’t forget to LIKE, SUBSCRIBE, and SHARE if this video sucked you in (pun intended)!

#Dyson #SatisfyingCleaning #GreenLaser #ASMRCleaning #TechGadgets"

How’s that? Let me know if you want me to pump it up even more!

🌀 Dyson Detect Green Laser in the Dark 🌌 (Satisfying Cleaning!)

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$Lattice Boltzmann Sailing Simulation - Effect of Easing the Outhaul One continuous CFD simulation of a sail, upwind at 60° to the true wind, with the sail angle fixed at 20° to the keel. The only thing that changes is the camber: the outhaul is eased from dead flat to 28 % camber, slowly at first — the first 1 % of cloth slack takes the first 30 seconds — while the boat, the flow and the cloth all keep running. Nothing is reset between settings. The green curve draws itself: VMG upwind against camber. What youre looking at • Dots are tracer particles carried by the flow, coloured by pressure — blue = suction, orange/red = higher pressure than the free stream. • Green arrow = lift, red = drag, white = their sum, all in coefficient form. • Bottom right: stern view, showing heel. • The wind triangle: true wind (blue) = apparent wind (white) + boat velocity (green). As the boat speeds up, the apparent wind swings forward — the sail is re-trimmed to it automatically. Result 0.1 % camber VMG 0.198 73 % of the best (a flat sail simply doesnt work) 0.5 % VMG 0.228 84 % 1 % VMG 0.265 98 % 2.9 % VMG 0.270 100 % ← best, at 10 % camber 5 % VMG 0.256 95 % 12 % VMG 0.249 92 % 20 % VMG 0.241 89 % (28 % camber, most heel) The lesson: the first bit of camber does nearly all the work, the top is broad and forgiving, and over-easing costs far less than over-flattening. Speeds are given as fractions of true wind speed. How its simulated • Flow: 2-D lattice-Boltzmann (D2Q9), BGK collision with a Smagorinsky LES model, 450 × 300 cells, 100 cells per chord, Reynolds number 5 000 — high enough that the flow separates and the sail can stall. • Sail: immersed boundary (multi-direct forcing), so the fluid feels the cloth and the cloth feels the fluid. • Cloth: position-based dynamics — an inextensible chain solved exactly, with bending stiffness, anchored at the mast and trimmed at the clew. • Boat: driven along its keel by the sail force projected on the course, against quadratic hull drag, heeling against a righting moment; heel reduces the drive by cos²(heel). Boat speed changes the apparent wind, which changes the trim — a closed loop. • 175 seconds of simulated flow, 17 minutes of compute, played at real time. Caveats, honestly • 2-D: no tip vortices, no twist, no mast interference, and 2-D flows shed stronger vortices than real 3-D ones, so the instantaneous forces swing much more than the displayed averages. • The boat model has no leeway and no rudder — it can only move along its keel. • Reynolds 5 000 is well below a real sails ~10⁶; the trends are right, the absolute numbers are not a polar diagram. 0:00 Flat sail — 0 % camber 0:15 First half percent of slack 0:30 1 % slack — already 98 % of best speed 1:12 Best: 2.9 % slack, 10 % camber 1:34 Past the peak — 5 % 2:10 Getting too full — 12 % 2:30 Over-eased — 20 % slack, 28 % camber$

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