Modelling droplet motion and interfacial tension in filters collecting liquid aerosols
MetadataShow full item record
Extensive experimental investigations have shown some of the differences between the behaviours of the barrel and the clamshell shapes of droplets on filter fibres in flow fields. Realistic flow velocities (such as those used in many industrial filter systems) were utilised. The forces acting are air drag, interfacial tension and gravity. The properties of the interfacial restoring force are modelled, and show agreement with the experimental results, at least in the linear extension region before the onset of oscillatory behaviour of the droplets (induced by instability of the flow field). The model for the oscillatory behaviour is explored, and the natural frequencies of oscillation in the radial and transverse directions are shown to be the same, for the barrel shape. The clamshell shape also has the same natural frequencies, but they are different to those of the barrel shape. The coupling of the radial and transverse oscillation modes is explored for both the barrel and clamshell shape. Some contact angle results are given, both without airflow acting on the droplet and with increasing airflow.
Showing items related by title, author, creator and subject.
Steffens, Marc J. (2011)Solvent extraction (SX) is the only commercially viable hydrometallurgical separation and purification technique for a range of metals that allows high product throughput and consistently high recoveries. After over 50 ...
The effect of interfacial slip on the dynamics of a drop in flow: Part I. Stretching, relaxation, and breakupRamachandran, A.; Tsigklifis, Konstantinos; Roy, A.; Leal, G. (2012)Using a numerical method based on the boundary-integral technique, we assess the impact of interfacial slip on the dynamics of deformation and breakup of a single drop subjected to a uniaxial extensional flow under ...
Dong, Chensong (2012)An experimental study on the beveling of quartz crystal blanks is presented in this paper. Two issues in the beveling are addressed: beveling time and the shape of bevel. The time needed for beveling is determined by ...