Výsledky vyhledávání - "annular combustors"

Akademický článek

Swirl flow response to transverse and axial acoustic forcing

Autor: Aditya SAURABH, Christian Oliver PASCHEREIT

Publikováno v: Journal of Fluid Science and Technology, Vol 9, Iss 3, Pp JFST0059-JFST0059 (2014)

The present study is an experimental investigation on the effect of axial and transverse acoustic forcing on a generic swirl flow. The aim is to provide a qualitative understanding of typical swirl flow response to transverse acoustic forcing, for a

Externí odkaz: https://doaj.org/article/299803c01f424c5bad1967ac794dd3bd

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Injection and combustion dynamics in swirled spray flames and azimuthal coupling in annular combustors

Autor: Vignat, Guillaume

Publikováno v: Chemical and Process Engineering. Université Paris-Saclay, 2020. English. ⟨NNT : 2020UPASC024⟩

The deployment of low-emission technologies in aero-engines does not only require that new designs produce reduced amounts of pollutants, but also that their dynamical behavior (ignition, blow-off, and combustion instabilities) be compatible with the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3f82ca1fcd8a3d83f7dc0124274529d3
https://theses.hal.science/tel-03188392

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Conference

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A hysteresis phenomenon leading to spinning or standing azimuthal instabilities in an annular combustor

Autor: Sébastien Candel, Thierry Schuller, Kevin Prieur, Daniel Durox

Publikováno v: Combustion and Flame
Combustion and Flame, Elsevier, 2017, 175, pp.283-291. ⟨10.1016/j.combustflame.2016.05.021⟩

Thermo-acoustic instabilities in annular combustors equipped with swirling turbulent injectors are most often coupled by azimuthal modes with a spinning or a standing structure. Experiments, and recent large eddy simulations, indicate that switching

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1af17e11d56f4213869e62f1a8db70af
https://doi.org/10.1016/j.combustflame.2016.05.021

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Surrogates for combustion instabilities in annularcombustors

Autor: Michaël Bauerheim, Aissatou Ndiaye, Franck Nicoud

Publikováno v: Uncertainty Management for Robust Industrial Design in Aeronautics
Charles Hirsch, Dirk Wunsch, Jacek Szumbarski, Łukasz Łaniewski-Wołłk, Jordi Pons-Prats. Uncertainty Management for Robust Industrial Design in Aeronautics, 199, Springer International Publishing AG, part of Springer Nature, pp.247-263, 2019, Springer Proceedings in Mathematics & Statistics, 978-3-319-57396-0. ⟨10.1007/978-3-319-77767-2_15⟩
Uncertainty Management for Robust Industrial Design in Aeronautics ISBN: 9783319777665

International audience; While the computational power is still increasing, thus arousing theinterest for high-fidelity simulations, the need of low-order models is also feltto both predict and understand combustion instabilities at low costs. Histori

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3353cd0bf08447f6a58252d734dbfd11
https://hal.archives-ouvertes.fr/hal-01905906

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Stability analysis of thermo-acoustic nonlinear eigenproblems in annular combustors. Part I. Sensitivity

Autor: Michaël Bauerheim, Luca Magri, Matthew P. Juniper

Publikováno v: Journal of Computational Physics
Journal of Computational Physics, Elsevier, 2016, 325, pp.395-410. ⟨10.1016/j.jcp.2016.07.032⟩

We present an adjoint-based method for the calculation of eigenvalue perturbations in nonlinear, degenerate and non self-adjoint eigenproblems. This method is applied to a thermo-acoustic annular combustor network, the stability of which is governed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4112b78a7cb56238731f8fd6bba857c
https://oatao.univ-toulouse.fr/20704/

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Stability analysis of thermo-acoustic nonlinear eigenproblems in annular combustors. Part II. Uncertainty quantification

Autor: Michaël Bauerheim, Franck Nicoud, Matthew P. Juniper, Luca Magri

Publikováno v: Journal of Computational Physics
Journal of Computational Physics, Elsevier, 2016, 325, pp.411-421. ⟨10.1016/j.jcp.2016.08.043⟩

Monte Carlo and Active Subspace Identification methods are combined with first- and second-order adjoint sensitivities to perform (forward) uncertainty quantification analysis of the thermo-acoustic stability of two annular combustor configurations.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bfb41218d7c0761439308d8001692742
http://arxiv.org/abs/1602.08440

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