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Effects of a thin, flexible nozzle on droplet formation and impingement

Creator:

Hawke, Shane R.

Abstract:

The droplet formation process in the vicinity of the nozzle exit and the behavior of a spreading droplet during impingement on a smooth glass surface were studied. Two nozzle geometries were tested. The first case was a stiff stainless steel nozzle plate 0.787 mm thick. The second case was a...

Resource Type:

Masters Thesis

Full Text:

AN ABSTRACT OF THE THESIS OF
Numerical study of droplet formation with nozzle dynamics and multiple droplet impingement

Creator:

Sangplung, Saangrut

Abstract:

Droplet formation from a flexible nozzle plate driven by a prescribed-waveform excitation of a piezoelectric is numerically investigated using a computational fluid dynamics (CFD) model with the VOF method. The droplet generator with a flexible nozzle plate, which is free to vibrate due to the pressure acting on the plate,...

Resource Type:

Dissertation

Full Text:

receding processes. Dynamic contact angle model has been well defined in the past years in which most of
Effect of PZT driving waveform and frequency on meniscus shape and dropon-demand droplet formation parameters

Creator:

Yang, Guozhong

Abstract:

For piezoelectric stack (PZT) driven droplet generator, the driving waveform and driving frequency effect on liquid filament shape and droplet characteristics have been experimentally studied. The experimental study was based on a PZT driven droplet generator with known geometric design parameters and working fluid properties. A lumped-element-model (LEM) constructed to...

Resource Type:

Dissertation

Full Text:

Microsoft Word - outline.doc AN ABSTRACT OF THE