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Publications associées (26)
Buckling-induced lock-up of a slender rod injected into a horizontal cylinder
Pedro Miguel Nunes Pereira de Almeida Reis
We investigate the buckling and post-buckling behavior of an elastic rod injected into a horizontal, frictional, cylindrical constraint through experiments, numerical simulations, and scaling analyses. Particular emphasis is given to the onset of helical b ...
Elsevier2015Shapes of a Suspended Curly Hair
Pedro Miguel Nunes Pereira de Almeida Reis
We investigate how natural curvature affects the configuration of a thin elastic rod suspended under its own weight, as when a single strand of hair hangs under gravity. We combine precision desktop experiments, numerics, and theoretical analysis to explor ...
American Physical Society2014Contorting a heavy and naturally curved elastic rod
Pedro Miguel Nunes Pereira de Almeida Reis
We investigate how the configurations obtained from the writhing of a heavy elastic rod are influenced by its intrinsic natural curvature. To this end, we perform a combination of numerics and precision model experiments on the compression or twisting of a ...
Royal Society of Chemistry2013Phase-field modeling of micropore formation in a solidifying alloy
This thesis is focused on the study of the morphology of micropores formed during solidification of metallic alloys. Micropores constrained to form in well-developed dendritic solid network adopt complex non-spherical shapes. Previous studies using X-ray t ...
EPFL2013Processes governing the flow redistribution in sharp river bends
Insight is provided in hydrodynamic processes governing the velocity redistribution in sharp river bends based on simulations of three recent experiments by means of Blanckaert and de Vriend's (2003, 2010) reduced-order nonlinear model without curvature re ...
2012Phase extraction in speckle interferometry by a circle fitting procedure in the complex plane
Pierre Jacquot, Sébastien Equis
In speckle interferometry (SI), temporal signals are amplitude- and frequency-modulated signals and exhibit a fluctuating background. Prior to phase computation, this background intensity must be eliminated. Here our approach is to build a complex signal f ...
Optical Society of America2011Curling instability induced by swelling
We study the spontaneous curving observed when a strip of tracing paper is deposited on a water surface. The differential swelling across the ribbon thickness leads to a curling of the sheet, with the curvature increasing to a maximum and then relaxing as ...
Royal Society of Chemistry2011Hydrodynamic processes in sharp meander bends and their morphological implications
The migration rate of sharp meander bends exhibits large variance and indicates that some sharply curved bends tend to stabilize. These observations remain unexplained. This paper examines three hydrodynamic processes in sharp bends with fixed banks and di ...
2011Saturation of curvature-induced secondary flow, energy losses, and turbulence in sharp open-channel bends: Laboratory experiments, analysis, and modeling
The paper investigates the influence of relative bend curvature on secondary flow, energy losses, and turbulence in sharp open-channel bends. These processes are important in natural streams with respect to sediment transport, the bathymetry and planimetry ...
2009