Zobrazeno 1 - 10
of 294
pro vyhledávání: '"Andreotti Bruno"'
Autor:
Poydenot, Florian, Andreotti, Bruno
Cloud droplets grow via vapor condensation and collisional aggregation. Upon reaching approximately $\approx 100~{\rm \mu m}$, their inertia allows them to capture smaller droplets during descent, initiating rain. Here, we show that raindrop formatio
Externí odkaz:
http://arxiv.org/abs/2410.11072
When moist air meets a cold surface, it creates a breath figure characterized by numerous small droplets. The central question is how the vapor flux is distributed between the growth of previously condensed drops and the nucleation of new ones. Here,
Externí odkaz:
http://arxiv.org/abs/2407.07624
Breath figures are the complex patterns that form when water vapor condenses into liquid droplets on a surface. The primary question concerning breath figures is how the condensing vapor is allocated between the growth of existing droplets and the nu
Externí odkaz:
http://arxiv.org/abs/2407.07608
Autor:
Poydenot, Florian, Andreotti, Bruno
Rain drops form in clouds by collision of submillimetric droplets falling under gravity: larger drops fall faster than smaller ones and collect them on their path. The puzzling stability of fogs and non-precipitating warm clouds with respect to this
Externí odkaz:
http://arxiv.org/abs/2402.10117
Publikováno v:
J. Fluid Mech. (2023), vol. 974, A16
Turbulent flows above a solid surface are characterised by a hydrodynamic roughness that represents, for the far velocity field, the typical length scale at which momentum mixing occurs close to the surface. Here, we are theoretically interested in t
Externí odkaz:
http://arxiv.org/abs/2311.01746
The COVID-19 pandemic has given rise to numerous articles from different scientific fields (epidemiology, virology, immunology, airflow physics...) without any effort to link these different insights. In this review, we aim to establish relationships
Externí odkaz:
http://arxiv.org/abs/2301.12975
Autor:
Poydenot, Florian, Abdourahamane, Ismael, Caplain, Elsa, Der, Samuel, Jallon, Antoine, Khoutami, Inés, Loucif, Amir, Marinov, Emil, Andreotti, Bruno
The pioneering work of G.I. Taylor on the turbulent dispersion of aerosols is exactly one century old and provides an original way of introducing both diffusive processes and turbulence at an undergraduate level. Light enough particles transported by
Externí odkaz:
http://arxiv.org/abs/2112.06501
Autor:
Poydenot, Florian, Abdourahamane, Ismael, Caplain, Elsa, Der, Samuel, Haiech, Jacques, Jallon, Antoine, Khoutami, Ines, Loucif, Amir, Marinov, Emil, Andreotti, Bruno
Preventive measures to reduce infection are needed to combat the COVID-19 pandemic and prepare for a possible endemic phase. Current prophylactic vaccines are highly effective to prevent disease but lose their ability to reduce viral transmission as
Externí odkaz:
http://arxiv.org/abs/2106.09489
The recent discovery of electro-active polymers has shown great promises in the field of soft robotics, and was logically followed by experimental, numerical and theoretical developments. Most of these studies were concerned with systems entirely cov
Externí odkaz:
http://arxiv.org/abs/2012.02269
Publikováno v:
J. Fluid Mech. (2019), vol. 877, R2
The string shooter experiment uses counter-rotating pulleys to propel a closed string forward. Its steady state exhibits a transition from a gravity dominated regime at low velocity towards a high velocity regime where the string takes the form of a
Externí odkaz:
http://arxiv.org/abs/2010.06874