Zobrazeno 1 - 10
of 7 355
pro vyhledávání: '"Boffetta, P"'
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:
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
We study, by means of extensive direct numerical simulations, the turbulent flow produced by a two-dimensional cellular forcing in a cubic box with periodic boundary conditions. In spite of the strong anisotropy of the forcing, we find that turbulenc
Externí odkaz:
http://arxiv.org/abs/2211.10731
Autor:
Yasaman Sadeghi, Mahdokht Naghash, Hossein Poustchi, Saba Alvand, Abdullah Gandomkar, Hossein Molavi Vardanjani, Fatemeh Malekzadeh, Paolo Boffetta, Christian C. Abnet, Neal D. Freedman, Reza Malekzadeh, Arash Etemadi
Publikováno v:
International Journal of Public Health, Vol 69 (2024)
ObjectivesTo determine the associations between waterpipe use, duration, and intensity of use with prevalence and incidence of metabolic syndrome and its components (increased waist circumference, triglycerides, fasting glucose, blood pressure and de
Externí odkaz:
https://doaj.org/article/46e981f86ed345328b82c61919123baf
Autor:
G.S. Downward, P. Hystad, S. Tasmin, S.K. Abe, E Saito, M.S. Rahman, M.R. Islam, P.C. Gupta, N. Sawada, R. Malekzadeh, S.L. You, H. Ahsan, S.K. Park, M.S. Pednekar, S. Tsugane, A. Etemadi, C.J. Chen, A. Shin, Y. Chen, P. Boffetta, K.S. Chia, K. Matsuo, Y.L. Qiao, N. Rothman, W. Zheng, M. Inoue, D. Kang, Q. Lan, R.C.H Vermeulen
Publikováno v:
Environment International, Vol 189, Iss , Pp 108803- (2024)
Background: Exposure to ambient air pollution is associated with a significant number of deaths. Much of the evidence associating air pollution with adverse effects is from North American and Europe, partially due to incomplete data in other regions
Externí odkaz:
https://doaj.org/article/b05a7ba2c4a844219b9ef0b075ca161e