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Final volume of a falling droplet

by eng442
Tags: droplet, falling, final, volume
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eng442
#1
Jan29-13, 02:33 PM
P: 1
First of all, do falling droplets have a final volume like falling bodies have a final velocity - in air?

If so, is there a way to determine such volume for a specific liquid and a specific height? More specifically, the final volume of a semen droplet falling from a 1km height.
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tiny-tim
#2
Jan29-13, 03:03 PM
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hi eng442! welcome to pf!

water is, for all practical purposes, incompressible

so (although the shape may change) the volume will be constant
Andy Resnick
#3
Jan29-13, 07:35 PM
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Quote Quote by eng442 View Post
<snip>More specifically, the final volume of a semen droplet falling from a 1km height.
Eh?

There will be some evaporation, but that depends on the details- temperature(s), relative humidity, etc..

Odd question....

Spinnor
#4
Jan29-13, 07:55 PM
P: 1,368
Final volume of a falling droplet

Quote Quote by eng442 View Post
First of all, do falling droplets have a final volume like falling bodies have a final velocity - in air?

If so, is there a way to determine such volume for a specific liquid and a specific height? More specifically, the final volume of a semen droplet falling from a 1km height.
I have never seen rain drops the size of breasts, even small breasts, though possibly the size of a nipple. So yes, if you could form a very large drop of water, say the size of your typical breast then after falling for a kilometer the large drop would break apart towards some maximum size. If on the other hand you had a cubic kilometer of water and could drop it a distance of one kilometer, all at once, I think you might have some very large drops?


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