Thesis-1973-Parkin.pdf (5.12 MB)
The production of droplets from liquid jets by capillary and electrohydrodynamic instabilities
thesis
posted on 2018-07-24, 14:15 authored by Charles S. ParkinThe production of droplets from jets formed directly at nozzles
was used in the lead shot production process where a nozzle was placed
in the base of a tank of molten lead. A similar process is now used to
obtain fertilizer prills where solid particles are produced from fertilizer
melts by liquid jet break-up. This method could be extended to other materials such as metals and polymers where it is advantageous to obtain
the material as solid spheres. The extension of this method to such
materials requires a knowledge of the break-up behaviour of a wide range
of liquids exhibiting both Newtonian and non-Newtonian behaviour.
Since the more viscous liquids are difficult to break-up for the
method to be successful in handling viscous liquids stronger forces than
the naturally occurring capillary forces may be required. It is for
this reason that the application of electrohydrodynamic forces to jets is
considered in this thesis.
It is of prime importance in most applications of jet break-up,
after determining the conditions for instability, to determine the size
of droplets formed. It is for this reason that this thesis is primarily
concerned with the prediction of the size of droplets formed and also
concerned with possible methods of monosize droplet production by liquid
jet break-up.
Funding
Science Research Council (research studentship).
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Publisher
© C.S. ParkinPublisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
1973Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.Language
- en