期刊
PHYSICAL REVIEW APPLIED
卷 15, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.15.014054
关键词
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资金
- ERDF [PGC2018-099217-B-I00]
- Spanish Research Agency Ministerio de Ciencia e Innovacion
- EPSRC-UK [EP/P024173/1]
- Department of Engineering Science, Oxford
- Royal Society [URF/R/180016, RGF/EA/181002]
- EPSRC [EP/P024173/1] Funding Source: UKRI
Inspired by Savart's work, the study focuses on the self-stimulated dynamics of a capillary jet. A feedback loop controls surface perturbations of the jet, establishing phase-locked stimulation regimes for stability. The linear theory combining transfer functions of each stage explains the observed features.
Inspired by Savart's pioneering work, we study the self-stimulated dynamics of a capillary jet. The feedback loop is realized by extracting surface perturbations from a section of the jet itself via a laser-photodiode pair, whose amplified signal drives an electromechanical actuator that, in turn, produces pressure perturbations at the exit chamber. Under specific conditions, this loop establishes phase-locked stimulation regimes that overcome the otherwise random natural breakup. For each laser position along the jet, the gain of the amplifier acts as a selector across a discrete set of observable frequencies. The main observed features are explained by a linear theory that combines the transfer function of each stage in the loop. Our findings are relevant to continuous inkjet technologies for the production of equally sized droplets.
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