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Nonlinear systems synchronization for modeling two-phase microfluidics flows

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Abstract

The aim of this work is to identify a class of models that can represent the two-phase microfluidic flow in different experimental conditions. The identification procedure adopted is based on the nonlinear systems synchronization theory. The experimental time series were assumed as the asymptotic behavior of a generic state variable of an unknown Master system, and this information was used to drive a second Slave system, with a known model and undefined parameters. To reach the convergence between the time evolutions of the two systems, so the flow identification, an error was evaluated and optimized by tuning the parameters of the Slave system, through genetic algorithm. The Chua’s oscillator has been chosen as a Slave model, and an optimal parameters set of Chua’s system was identified for each of the 18 experiments. As proof of concept on approach validity, the changes in the parameters set in the different experimental conditions were discussed taking into account the results of the nonlinear time series analysis. The results confirm the possibility with a single model to identify a variety of flow regimes generated in two-phase microfluidic processes, independently of how the processes have been generated, no directed relations with the input flow rate used are in the model.

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Authors and Affiliations

  1. Dipartimento di Ingegneria Elettrica Elettronica e Informatica DIEEI, Università degli studi di Catania, viale Anrea Doria 6, 95125, Catania, Italy

    Fabiana Cairone, Princia Anandan & Maide Bucolo

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  1. Fabiana Cairone
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  2. Princia Anandan
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  3. Maide Bucolo
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Correspondence to Fabiana Cairone.

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Cairone, F., Anandan, P. & Bucolo, M. Nonlinear systems synchronization for modeling two-phase microfluidics flows. Nonlinear Dyn 92, 75–84 (2018). https://doi.org/10.1007/s11071-017-3819-0

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  • DOI: https://doi.org/10.1007/s11071-017-3819-0

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