Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Boujo, Edouard"'
We derive a generalised asymptotic model for the flow of a thin fluid film over an arbitrarily-parameterised non-axisymmetric curved substrate surface based on the lubrication approximation. In addition to surface tension, gravity, and centrifugal fo
Externí odkaz:
http://arxiv.org/abs/2405.16983
Autor:
Chiarini, Alessandro, Boujo, Edouard
The laminar flow past rectangular prisms is studied in the space of length-to-height ratio ($1 \le L/H \le 5$), width-to-height ratio ($1.2 \le W/H \le 5$) and Reynolds number ($Re \lessapprox 700$). The primary bifurcation is investigated with linea
Externí odkaz:
http://arxiv.org/abs/2405.04705
We consider fluid flows, governed by the Navier-Stokes equations, subject to a steady symmetry-breaking bifurcation and forced by a weak noise acting on a slow time scale. By generalizing the multiple-scale weakly nonlinear expansion technique employ
Externí odkaz:
http://arxiv.org/abs/2403.06824
We study numerically and theoretically the gravity-driven flow of a viscous liquid film coating the inner side of a horizontal cylindrical tube and surrounding a shear-free dynamically inert gaseous core. The liquid-gas interface is prone to the Rayl
Externí odkaz:
http://arxiv.org/abs/2211.11364
We propose a theoretical approach to derive amplitude equations governing the weakly nonlinear evolution of nonnormal dynamical systems when they experience transient growth or respond to harmonic forcing. This approach reconciles the nonmodal nature
Externí odkaz:
http://arxiv.org/abs/2110.08064
Autor:
Boujo, Edouard
Publikováno v:
Journal of Fluid Mechanics, 920, A12 (2021)
Adjoint-based sensitivity analysis is routinely used today to assess efficiently the effect of open-loop control on the linear stability properties of unstable flows. Sensitivity maps identify regions where small-amplitude control is the most effecti
Externí odkaz:
http://arxiv.org/abs/2008.00350
Akademický článek
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Experiments and modelling of rate-dependent transition delay in a stochastic subcritical bifurcation
Publikováno v:
Royal Society Open Science 5: 172078 (2018)
Complex systems exhibiting critical transitions when one of their governing parameters varies are ubiquitous in nature and in engineering applications. Despite a vast literature focusing on this topic, there are few studies dealing with the effect of
Externí odkaz:
http://arxiv.org/abs/1803.02676
Saturation of a turbulent mixing layer over a cavity: response to harmonic forcing around mean flows
Publikováno v:
Journal of Fluid Mechanics, 853 (2018)
Turbulent mixing layers over cavities can couple with acoustic waves and lead to undesired oscillations. To understand the nonlinear aspects of this phenomenon, a turbulent mixing layer over a deep cavity at Reynolds number 150 000 is considered and
Externí odkaz:
http://arxiv.org/abs/1711.00273
The problem of output-only parameter identification for nonlinear oscillators forced by colored noise is considered. In this context, it is often assumed that the forcing noise is white, since its actual spectral content is unknown. The impact of thi
Externí odkaz:
http://arxiv.org/abs/1706.00574