Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Juan Ignacio Polanco"'
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-11 (2021)
Turbulent flows may be regarded as an intricate collection of mutually-interacting vortices. Here, authors investigate the statistics of velocity circulation in quantum and classical turbulence and propose a connection between intermittency on both c
Externí odkaz:
https://doaj.org/article/de5b36c498f24efcab8b0caf2cad74cf
Publikováno v:
Physical Review X, Vol 11, Iss 1, p 011053 (2021)
The velocity circulation, a measure of the rotation of a fluid within a closed path, is a fundamental observable in classical and quantum flows. It is indeed a Lagrangian invariant in inviscid classical fluids. In quantum flows, circulation is quanti
Externí odkaz:
https://doaj.org/article/0e6a87fc4a3e4e96b03abb03ad67551b
Publikováno v:
Physical Review Fluids. 8
Geophysical flows are often turbulent and subject to rotation. This rotation modifies the structure of turbulence and is thereby expected to sensibly affect its Lagrangian properties. Here, we investigate the relative dispersion and geometry of pairs
Publikováno v:
Physical Review X, Vol 11, Iss 1, p 011053 (2021)
Physical Review X
Physical Review X, American Physical Society, 2021, 11 (1), ⟨10.1103/PhysRevX.11.011053⟩
Physical Review X
Physical Review X, American Physical Society, 2021, 11 (1), ⟨10.1103/PhysRevX.11.011053⟩
The velocity circulation, a measure of the rotation of a fluid within a closed path, is a fundamental observable in classical and quantum flows. It is indeed a Lagrangian invariant in inviscid classical fluids. In quantum flows, circulation is quanti
Publikováno v:
Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2021, 924, ⟨10.1017/jfm.2021.662⟩
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2021, 924, ⟨10.1017/jfm.2021.662⟩
International audience; Particles are a widespread tool for obtaining information from fluid flows. When Eulerian data are unavailable, they may be employed to estimate flow fields or to identify coherent flow structures. Here we numerically examine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e093d496d3372f7702993fad076ffb6a
Publikováno v:
Nature Communications
Nature Communications, Vol 12, Iss 1, Pp 1-11 (2021)
Nature Communications, Vol 12, Iss 1, Pp 1-11 (2021)
The understanding of turbulent flows is one of the biggest current challenges in physics, as no first-principles theory exists to explain their observed spatio-temporal intermittency. Turbulent flows may be regarded as an intricate collection of mutu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f81c181fe2721142e011a9641e1021f
Publikováno v:
Physical Review Letters
Physical Review Letters, American Physical Society, 2020, 125 (25), ⟨10.1103/PhysRevLett.125.254504⟩
Physical Review Letters, American Physical Society, 2020, 125 (25), ⟨10.1103/PhysRevLett.125.254504⟩
Finite-temperature quantum turbulence is often described in terms of two immiscible fluids that can flow with a non-zero mean relative velocity. Such out-of-equilibrium state is known as counterflow superfluid turbulence. We report here the emergence
Autor:
Nickolas Stelzenmuller, Ivana Vinkovic, Mickaël Bourgoin, Nicolas Mordant, Juan Ignacio Polanco
Publikováno v:
International Journal of Heat and Fluid Flow
International Journal of Heat and Fluid Flow, Elsevier, 2018, 71, pp.231-245. ⟨10.1016/j.ijheatfluidflow.2018.04.007⟩
International Journal of Heat and Fluid Flow, 2018, 71, pp.231-245. ⟨10.1016/j.ijheatfluidflow.2018.04.007⟩
International Journal of Heat and Fluid Flow, Elsevier, 2018, 71, pp.231-245. ⟨10.1016/j.ijheatfluidflow.2018.04.007⟩
International Journal of Heat and Fluid Flow, 2018, 71, pp.231-245. ⟨10.1016/j.ijheatfluidflow.2018.04.007⟩
Lagrangian tracking of particle pairs is of fundamental interest in a large number of environmental applications dealing with contaminant dispersion and passive scalar mixing. The aim of the present study is to extend the observations available in th
Publikováno v:
Physical Review Fluids
Physical Review Fluids, American Physical Society, 2020, 5 (3), ⟨10.1103/PhysRevFluids.5.032601⟩
Physical Review Fluids, American Physical Society, 2020, 5 (3), ⟨10.1103/PhysRevFluids.5.032601⟩
Particles are today the main tool to study superfluid turbulence and visualize quantum vortices. In this work, we study the dynamics and the spatial distribution of particles in co-flow and counterflow superfluid helium turbulence in the framework of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::754d441e70f5cb282419c5ebad68958f
Publikováno v:
Environmental Fluid Mechanics
Environmental Fluid Mechanics, Springer Verlag, 2017, 17, pp.429-448. ⟨10.1007/s10652-016-9495-7⟩
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Environmental Fluid Mechanics, Springer Verlag, 2017, 17, pp.429-448. ⟨10.1007/s10652-016-9495-7⟩
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
International audience; Lateral cavities are major storage zones in riverine environments for which the mass exchanges with the main stream strongly impact The characteristics of the habitat in these dead zones. An experimental work is presented here