Centrifugal atomization of metal melts is a cost-effective process for powder production and spray deposition. The properties of the as-produced powder and deposit are determined primarily by the characteristics of the atomized droplets, which in turn are largely dependent on the flow development of the melt on the atomizer. This paper develops a model for analysing the flow development of a fu...

The objective of present study was to evaluate the effect of processing methods and sintering condition on matrix formation and subsequent drug release from wax matrix tablets for controlled release. Ketorolac tromethamine and compritol were processed with appropriate diluent using either dry blending, spray drying, partial melt granulation or melt granulation.The tablets were then sintered at ...

The results of research on the process applying lubricating coatings are presented in this work. For purpose, plastic greases were used, which base oil is perfluoropolyether (PFPE) and thickener poly(tetrafluoroethylene) (PTFE). Due to their consistency, these materials classified into different classes according National Lubricating Grease Institute (NLGI). was carried out using a time-pressur...

The structure of the pressure swirl nozzle is key factor affecting atomization quality. Optimal design conducive to improving quality and has important significance for efficiency stability combustor. effect section diameter, contraction angle, straight expansion angle on spray cone liquid film thickness studied by numerical simulation. results show that both decrease with increase angle. As di...

The coupling of Eulerian and Lagrangian methods in the Eulerian–Lagrangian Spray Atomization (ELSA) approach is critical. This study proposes an equation for primary breakup particle diameter D a diesel fuel spray adopts it as key transition criterion coupling. A three-dimensional modeled by large-eddy simulation (LES) approach. improved ELSA was conducted using various criteria Dcr. results sh...

BACKGROUND Spray boom systems, an alternative to the predominantly-used spray guns, have the potential to considerably improve crop protection management in glasshouses. Based on earlier experiments, the further optimization of the deposits of a medium spray quality extended range flat fan nozzle type using easy adjustable spray boom settings was examined. Using mineral chelate tracers and wate...

Flashing or thermodynamic breakup of a liquid jet occurs when a pressurized subcooled or saturated liquid is released to a lower pressure, resulting in violent vapor nucleation, expansion, and break up of the liquid phase. Flashing is known to produce very fine droplet atomization, often not possible by traditional mechanical means. In this work, flashing atomization is introduced in a spray bu...

Goal is to investigate how delivery nozzle design influences the cooling rate of cryogen spray as used in skin laser treatments. Cryogen was sprayed through nozzles that consist of metal tubes with either a narrow or wide diameter and two different lengths. Fast-flashlamp photography showed that the wide nozzles, in particular the long wide one, produced a cryogen jet (very small spray cone ang...