Numerical and Experimental Analysis of Monostable Mini- and Micro-Oscillators |
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Authors: | Rachid Khelfaoui Stéphane Colin Stéphane Orieux Robert Caen Lucien Baldas |
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Affiliation: | 1. Université de Toulouse, INSA, UPS;2. LGMT (Laboratoire de Génie Mecanique de Toulouse) , Toulouse , France |
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Abstract: | 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. |
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