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Sensitivity and stability analysis of a rigid canopy flow

Luminari, Nicola and Airiau, Christophe Sensitivity and stability analysis of a rigid canopy flow. (2015) In: 22ème congrès Français de Mécanique, 24 August 2015 - 28 August 2015 (Lyon, France).

(Document in English)

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Official URL: http://hdl.handle.net/2042/57596


The present research project aims at examining the possibility of using walls covered by fexible filaments as a mean of reducing drag; we first study a rigid canopy flow model that involve several initial parameters. A sensitivity study using adjoints allows to pinpoint the parameters which influence the most both the shape of the profile and integral quantities associated to it. The intrinsic stability properties of the flow, which result from the model, are analysed with a linear local stability approach in the temporal framework. A second approach, based on adjoint stability equations, provides the sensitivity of the eigenvalues of the stability problem to changes in the flow profile, changes which can arise from a modifications of the parameters of the model.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to AFM editor. The definitive version is available at http://cfm2015.sciencesconf.org/ The original PDF of the article can be found at Congrès Français de Mécanique 2015 website : http://documents.irevues.inist.fr/bitstream/handle/2042/57596/70703.pdf?sequence=1&isAllowed=y
Audience (conference):National conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:04 Feb 2016 10:00

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