To sum up:
As the air reaches at a region of the tube with a smaller cross-section area, the collisions among the molecules organize the velocities of the molecules in order for them to pass through the narrower part. This fact has the results below:
i) First of all the air is accelerated...
Explanation with more details (by me):
As the air speeds up passing through a narrow part of a tube, a portion of internal energy due to thermal motion of molecules converted in ordered kinetic energy (and thus the dynamic pressure increase).
The result of this is the decrease of radom...
When air flows through a variable cross - section tube, as the cross - section area increases, the average flow speed of air decreases (due to continuity equation) and according to Bernoulli’s theorem the static pressure increases. Regardless of the mathematical proof of Bernoulli’s theorem...
When air flows through a variable cross - section tube, as the cross - section area increases, the average flow speed of air decreases (due to continuity equation) and according to Bernoulli’s theorem the static pressure increases. Regardless of the mathematical proof of Bernoulli’s theorem...