Fuck Yeah Fluid Dynamics

Celebrating the physics of all that flows. Ask a question, submit a post idea or send an email. You can also follow FYFD on Twitter and Google+. FYFD is written by Nicole Sharp, PhD.

Recent Tweets @

With the Oscars just over, it seems like a good time for some movie-trailer-style fluid dynamics. This video shows a rotating water tank from the perspective of a camera rotating with the tank at 10 rpm. Initially, the tank and its contents are at rest. When the tank begins spinning, the fluid inside responds. Pink potassium permanganate crystals at the bottom of the tank show fluid motion as they dissolve, and food coloring is spread on the water’s surface to show motion there. Fluid near the edge of the tank reaches the tank’s rotational velocity fastest, due to friction with the wall, while fluid near the center of the tank takes longer to spin up to speed. This creates the spiral-galaxy-like shape in the dye. Eventually viscosity will transmit the effects of the wall’s motion even into the center of the tank. (Video credit: UCLA Spinlab)

  1. carvingwords reblogged this from fuckyeahfluiddynamics
  2. thegamejustgotmorefierce reblogged this from fuckyeahfluiddynamics
  3. whatshallwecallmusic reblogged this from fuckyeahfluiddynamics
  4. sonicandafez reblogged this from fuckyeahfluiddynamics
  5. fuckyeahnicci reblogged this from fuckyeahfluiddynamics
  6. cindytron47 reblogged this from fuckyeahfluiddynamics
  7. rarae-aves reblogged this from fuckyeahfluiddynamics
  8. vitreouscalligrapher reblogged this from fuckyeahfluiddynamics
  9. bearpiper reblogged this from fuckyeahfluiddynamics
  10. mc-reg reblogged this from fuckyeahfluiddynamics
  11. tylahschmitt reblogged this from fuckyeahfluiddynamics
  12. lokineko reblogged this from fuckyeahfluiddynamics and added:
    So… beautiful
  13. uniquenessisme reblogged this from fuckyeahfluiddynamics
  14. rezzzonked reblogged this from fuckyeahfluiddynamics
  15. matt43094 reblogged this from fuckyeahfluiddynamics
  16. antiphantomtechnic reblogged this from fuckyeahfluiddynamics
  17. zaydra reblogged this from fuckyeahfluiddynamics
  18. meenage-tutant-tinja-nurtles reblogged this from fuckyeahfluiddynamics
  19. x10n9k1d reblogged this from fuckyeahfluiddynamics
  20. makgregory reblogged this from fuckyeahfluiddynamics
  21. bluesundrops reblogged this from fuckyeahfluiddynamics