Sökning: WFRF:(Lopez Arteaga Ines)
> (2020-2024) >
Parameter estimatio...
Parameter estimation of two coupled oscillator model for pure intrinsic thermo-acoustic instability
-
- Wildemans, Roeland (författare)
- Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
-
- Kornilov, Viktor (författare)
- Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
-
- Lopez Arteaga, Ines (författare)
- KTH,Marcus Wallenberg Laboratoriet MWL,Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
-
(creator_code:org_t)
- Springer Nature, 2023
- 2023
- Engelska.
-
Ingår i: Nonlinear dynamics. - : Springer Nature. - 0924-090X .- 1573-269X. ; 111:14, s. 12835-12853
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- A nonlinear phenomenological model of two coupled oscillators is proposed, which is able to describe the rich nonlinear behaviour stemming from an unstable pure intrinsic thermo-acoustic (ITA) mode of a simple combustion system. In an experimental bifurcation analysis of a pure ITA mode, it was observed that for increasing mean upstream velocity the flames loose stability through a supercritical Hopf bifurcation and subsequently exhibit limit cycle, quasi-periodic and period-2 limit cycle oscillations. The quasi-periodic oscillations were characterised by low frequent amplitude and frequency modulation. It is shown that a phenomenological model consisting of two coupled oscillators is able to reproduce qualitatively all the different experimentally observed regimes. This model consists of a nonlinear Van der Pol oscillator and a linear damped oscillator, which are nonlinearly coupled to each other. Furthermore, a parameter estimation of the model parameters is conducted, which reveals a good quantitative match between the model response and the experimental data. Hence, the presented phenomenological dynamical model accurately describes the nonlinear self-excited acoustic behaviour of premixed flames and provides a promising model structure for nonlinear time-domain flame models.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Nyckelord
- Coupled nonlinear oscillators
- Flame dynamics
- Intrinsic thermo-acoustics instability
- Parameter estimation
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas