Zobrazeno 1 - 10
of 5 922
pro vyhledávání: '"P. Boffetta"'
It has been long known that the addition of linear friction on two-dimensional Navier-Stokes (NS) turbulence, often referred to as Ekman-Navier-Stokes (ENS) turbulence, induces strong intermittent fluctuations on small-scale vorticity. Such fluctuati
Externí odkaz:
http://arxiv.org/abs/2408.15735
Permafrost thaw is a major concern raised by the ongoing climate change. An understudied phenomenon possibly affecting the pace of permafrost thaw is the onset of convective motions within the active layer caused by the density anomaly of water. Here
Externí odkaz:
http://arxiv.org/abs/2407.20714
We propose a minimal model of microswimmer based on immersed boundary methods. We describe a swimmer (either pusher or puller) as a distribution of point forces, representing the swimmer's flagellum and body, with only the latter subjected to no-slip
Externí odkaz:
http://arxiv.org/abs/2407.08483
We study the temporal fluctuations of the flux of surface potential energy in Surface Quasi-Geostrophic (SQG) turbulence. By means of high-resolution, direct numerical simulations of the SQG model in the regime of forced and dissipated cascade of tem
Externí odkaz:
http://arxiv.org/abs/2406.07235
Autor:
Crialesi-Esposito, Marco, Boffetta, Guido, Brandt, Luca, Chibbaro, Sergio, Musacchio, Stefano
The formation of small droplets and bubbles in turbulent flows is a crucial process in geophysics and engineering, whose underlying physical mechanism remains a puzzle. In this letter, we address this problem by means of high-resolution numerical sim
Externí odkaz:
http://arxiv.org/abs/2402.19121
Autor:
Fatemeh Toorang, Monireh Sadat Seyyedsalehi, Bahareh Sasanfar, Hamideh Rashidian, Maryam Hadji, Mahin Gholipour, Maryam Marzban, Mahdieh Bakhshi, Abbas Rezaianzadeh, Paolo Boffetta, Kazem Zendehdel
Publikováno v:
BMC Cancer, Vol 24, Iss 1, Pp 1-9 (2024)
Highlights Lung cancer (LC) is the most common cancer among males and the third most common cancer among females worldwide. Focusing on primary prevention may be the main strategy for reducing the overall mortality of LC, especially in LMICs. This st
Externí odkaz:
https://doaj.org/article/5637a83326b04fa8819bf88ec661e479
Autor:
Ventrella, Francesco Michele, Pujara, Nimish, Boffetta, Guido, Cencini, Massimo, Thiffeault, Jean-Luc, De Lillo, Filippo
Many species of phytoplankton migrate vertically near the surface of the ocean, either in search of light or nutrients. These motile organisms are affected by ocean waves at the surface. We derive a set of wave-averaged equations to describe the moti
Externí odkaz:
http://arxiv.org/abs/2304.14028
Autor:
Crialesi-Esposito, Marco, Boffetta, Guido, Brandt, Luca, Chibbaro, Sergio, Musacchio, Stefano
We investigate the statistics of turbulence in emulsions of two-immiscible fluids of same density. We compute for the first time velocity increments between points conditioned to be located in the same phase or in different phases and examine their p
Externí odkaz:
http://arxiv.org/abs/2301.01537
Publikováno v:
Phys. Rev. E 107, 055107 (2023)
We extensively study the Toner-Tu-Swift-Hohenberg model of motile active matter by means of direct numerical simulations in a two-dimensional confined domain. By exploring the space of parameters of the model we investigate the emergence of a new sta
Externí odkaz:
http://arxiv.org/abs/2212.11008
We study the statistics of free-surface turbulence at large Reynolds numbers produced by direct numerical simulations in a fluid layer at different thickness with fixed characteristic forcing scale. We observe the production of a transient inverse ca
Externí odkaz:
http://arxiv.org/abs/2212.04627