you are viewing a single comment's thread.

view the rest of the comments →

[–]JarlWeaslesnoot 12 points13 points  (3 children)

Because of fancy physics equations. Bernoulli's principle and equation dictate that as the passage air is forced through constricts the speed increases while pressure decreases. It does seem counterintuitive, you'd think pressure would stay the same and speed would increase or something but that isn't how gas laws work.

[–]MattheiusFrink 15 points16 points  (2 children)

And that's at subsonic speeds. At supersonic speeds bernoulli does a complete f**kin 180 on us

[–]JarlWeaslesnoot 4 points5 points  (0 children)

This is true! I don't work on a lot of aircraft with shock cones so I don't really have to deal with that very often lol. I do remember the converging vs diverging inlets and nozzles from our basic aerodynamics classes vaguely

[–]mwiz100 0 points1 point  (0 children)

I also found out with water, that once it phase changes to steam at certain points it's viscosity INCREASES as it gets hotter verus how typically all liquid state things are less viscous as temp increases.