hey guys, I want to ask you, if someone can explain to me why do capillary waves form on water jet.
THANKS!
this is arduously to explain. make yourself familiarize with Re/Oh/We numbers
if youre really interested:
Lefebvre, Arthur H. “Atomisation and Sprays” 1989, Taylor & Francis Group, LLC
The aerodynamic instability and disintegration of viscous liquid sheets, N. DOMBROWSKI and W. R. JOHNS, Chemical Engineering Science, 1963, Vol. 18, pp. 203-214. Pergamon Press Ltd., Oxford. Printed in Great Britain.
http://scitation.aip.org/content/aip/journal/pofa/2/5/10.1063/1.857724
my guess
here are some examples, but best pictures for simple orifices ive seen are in first source. lefebvre is really profitable lecture!
like pic related, there are different regimes starting with breaking down surface tension forces (this ends up at hyperbola OhRe =2 for simple orifices) after that jet is passing through the other regimes until complete spray formation. so you cannot say what is occuring that easy. in addition real processes are instationary for normal...
4 regimes in Oh-Re-diagram
btw first regime is rayleigh area, or what this is called correctly....
for lamellas..
in addition jet break up lenght isnt ~ avg jet speed or so. sprayformation and preliminary stages are difficult to understand.
i meant Oh*Re >= 2
