An asymmetric micro-oscillator design based on a monostable fluidic amplifier is proposed. Experimental data with various feedback loop configurations point out that the main effect responsible for the oscillation is a capacitive and not a propagative effect. Actually, sound propagation in the feedback loop only generates a secondary oscillation which is not strong enough to provoke the jet switching. Data from a hybrid simulation using a commercial CFD code and a simple analytical model are in good agreement with the experimental data. A more compact plane design with reduced feedback loop volumes is also studied through a fully CFD simulation that confirms the previous conclusions.
- Nanotechnology Institute
Numerical and Experimental Analysis of Monostable Mini- and Micro-Oscillators
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Khelfaoui, R, Colin, S, Caen, R, Orieux, S, & Baldas, L. "Numerical and Experimental Analysis of Monostable Mini- and Micro-Oscillators." Proceedings of the ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 5th International Conference on Nanochannels, Microchannels, and Minichannels. Puebla, Mexico. June 18–20, 2007. pp. 717-724. ASME. https://doi.org/10.1115/ICNMM2007-30126
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