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Bi-parametric topology of subharmonics of an asymmetric bubble oscillator at high dissipation rate

Klapcsik, Kálmán and Varga, Roxána and Hegedűs, Ferenc (2018) Bi-parametric topology of subharmonics of an asymmetric bubble oscillator at high dissipation rate. NONLINEAR DYNAMICS. ISSN 0924-090X

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Abstract

The subharmonic topology of a nonlinear, asymmetric bubble oscillator (Keller–Miksis equation) in glycerine is investigated in the parameter space of its external excitation (frequency and pressure amplitude). The bi-parametric investigation revealed that the exoskeleton of the topology can be described as the composition of U-shaped subharmonics of periodic orbits. The fine substructure (higher-order ultra-subharmonic resonances) usually appearing via the well-known period n-tupling phenomenon is completely missing due to the high dissipation rate of the viscous liquid. Moreover, a complex internal structure of the subharmonics has been found, which are composed by interconnected bifurcation blocks (in a zig-zag pattern) each describing the skeleton of a shrimp-shaped domain. The employed numerical techniques are the combination of an in-house initial value problem solver written in C++/CUDA C to harness the high processing power of professional graphics cards, and the boundary value problem solver AUTO to compute periodic orbits directly regardless of their stability.

Item Type: Article
Subjects: Q Science / természettudomány > Q1 Science (General) / természettudomány általában
Depositing User: Dr. Ferenc Hegedűs
Date Deposited: 26 Sep 2018 09:22
Last Modified: 26 Sep 2018 09:22
URI: http://real.mtak.hu/id/eprint/85350

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