Article
Self-Stimulated Capillary Jet
Author/s | González García, Heliodoro
Arcenegui, Juan García García, Francisco Javier Castrejón-Pita, José Rafael Castrejón-Pita, Alfonso A. |
Department | Universidad de Sevilla. Departamento de Física Aplicada III Universidad de Sevilla. Departamento de Física Aplicada I |
Publication Date | 2021-01 |
Deposit Date | 2022-01-19 |
Published in |
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Abstract | 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 laserphotodiode pair, ... 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 laserphotodiode 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. |
Project ID. | PGC2018-099217-B-I00 |
Citation | González García, H., Arcenegui, J., García de Bollulos, F.J., Castrejón-Pita, J.R. y Castrejón-Pita, A.A. (2021). Self-Stimulated Capillary Jet. Physical Review Applied, 15 (1), 014054-. |
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PRA_garcia-garcia_2021_self.pdf | 1.396Mb | [PDF] | View/ | |