Abstract
Consider the first order differential system given by
where a is a real parameter and the dots denote derivatives with respect to the time t. Such system is known as the generalized Rayleigh system and it appears, for instance, in the modeling of diabetic chemical processes through a constant area duct, where the effect of adding or rejecting heat is considered. In this paper we characterize the global dynamics of this generalized Rayleigh system. In particular we prove the existence of a unique limit cycle when the parameter \(a\ne 0\).
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Acknowledgements
The first author is partially supported by CAPES-Brasil-Finance Code 001. The second author is partially supported by the Agencia Estatal de Investigación grant PID2019-104658GB-I00, the Agència de Gestió d’Ajuts Universitaris i de Recerca grant 2017SGR1617, and the H2020 European Research Council grant MSCA-RISE-2017-777911. The third author is partially supported by Projeto Temático FAPESP number 2019/21181–0 and by PQ-CNPq number 304766/2019–4.
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Baldissera, M.D., Llibre, J. & Oliveira, R. Dynamics of a Generalized Rayleigh System. Differ Equ Dyn Syst (2022). https://doi.org/10.1007/s12591-022-00604-z
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DOI: https://doi.org/10.1007/s12591-022-00604-z