Andrej Jeromen (Author), Edvard Govekar (Author)

Abstract

The subject of this study is the vertical mass-spring-like oscillation of a pendant droplet and its resonant detachment, which was experimentally observed in the process of laser droplet generation from a metal wire. The process was characterized by various time series, which were generated from a sequence of infrared intensity images of the process. Following a visual inspection of pendant droplet images and an analysis of a wavelet based time-frequency map of the dropletʼs vertical displacement time series, the pendant dropletʼs oscillation is described by a time-variable mass-spring system. Based on the characteristics of the time-frequency map, the resonant nature of the pendant droplet detachment was demonstrated. Additionally, an algebraic expression was formulated, which can be used to predict the detached dropletʼs diameter as a function of the laser pulse frequency.

Keywords

time series;time-frequency analysis;pendant droplet;mass-spring systems;droplet detachment;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 532.5:519.6(045)
COBISS: 14623515 Link will open in a new window
ISSN: 0888-3270
Views: 1531
Downloads: 814
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Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: Slovenian
Secondary keywords: analize časovnih serij;časovne serije;ločevanje kapljic;
Type (COBISS): Article
Embargo end date (OpenAIRE): 2018-05-06
Pages: str. 503-516
Issue: ǂVol. ǂ80
Chronology: Dec. 2016
DOI: 10.1016/j.ymssp.2016.04.038
ID: 10993003