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FeynmanFtw
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Now I've read a few explanations online already in the hopes of getting to grips with this phenomenon, but it seems they all bang on about the same thing (higher velocity in the narrow portion due to the principle of continuity), though none really explain WHY pressure drops in the narrow portion (i..e where the velocity of the fluid flow increases).
Could anybody shed further light on this, preferably in terms of molecules? Why would a greater number of velocity components in a direction parallel to the tube walls mean less/weaker collisions with the tube walls?
Thanks in advance
edit: perp corrected to parallel.
Could anybody shed further light on this, preferably in terms of molecules? Why would a greater number of velocity components in a direction parallel to the tube walls mean less/weaker collisions with the tube walls?
Thanks in advance
edit: perp corrected to parallel.
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