Zobrazeno 1 - 10
of 240
pro vyhledávání: '"Franklin, Erick"'
Publikováno v:
Phys. Fluids 36, 113342 (2024)
In a recent paper (Gonzalez et al., 2023), we investigated the motion of grains within a granular bed sheared by a viscous fluid, and showed how segregation and hardening occur in the fluid- (bedload) and solid-like (creep) regions. In this paper, we
Externí odkaz:
http://arxiv.org/abs/2411.09794
Publikováno v:
Geomorphology, 467, 109488, 2024
We inquire into the morphodynamics of barchans under seasonal flows. For that, we carried out grain-scale numerical computations of a subaqueous barchan exposed to two-directional flows, and we varied the angle and frequency of oscillations. We show
Externí odkaz:
http://arxiv.org/abs/2411.01676
Autor:
Lima, Nicolao Cerqueira, Assis, Willian Righi, Alvarez, Carlos Azael, Franklin, Erick de Moraes
Publikováno v:
Journal of Geophysical Research: Earth Surface, 129, e2024JF007741, 2024
Barchans are eolian dunes of crescent shape found on Earth, Mars and other celestial bodies. Among the different types of barchan-barchan interaction, there is one, known as chasing, in which the dunes remain close but without touching each other. In
Externí odkaz:
http://arxiv.org/abs/2408.07604
Publikováno v:
Scientific Reports, 14, 18381, 2024
Barchans are crescent-shape dunes ubiquitous on Earth and other celestial bodies, which are organized in barchan fields where they interact with each other. Over the last decades, satellite images have been largely employed to detect barchans on Eart
Externí odkaz:
http://arxiv.org/abs/2408.07584
Publikováno v:
Physics of Fluids, 36, 013303 (2024)
Micro fluidized beds are basically suspensions of solid particles by an ascending fluid in a mm-scale tube, with applications in chemical and pharmaceutical processes involving powders. Although in many applications beds are polydisperse, previous wo
Externí odkaz:
http://arxiv.org/abs/2401.10780
Publikováno v:
Data in Brief, 52, 109978 (2024) - invited article
Barchans are dunes commonly found in dune fields on Earth, Mars and other celestial bodies, where they can interact with each other. This article concerns experimental data for the flow over subaqueous barchans that are either isolated or interacting
Externí odkaz:
http://arxiv.org/abs/2401.03032
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics, v.322, 105153, 2023
Gravity-driven flows of liquid films are frequent in nature and industry, such as in landslides, lava flow, cooling of nuclear reactors, and coating processes. In many of these cases, the liquid is non-Newtonian and has particular characteristics. In
Externí odkaz:
http://arxiv.org/abs/2311.11986
Publikováno v:
Physics of Fluids 1 October 2023; 35 (10): 103326
When a granular bed is sheared by a fluid that flows above a critical limit, it undergoes a complex motion that varies along time: it can contain fluid- (bedload) and solid-like (creep) regions, being prone to strain hardening and, in case of polydis
Externí odkaz:
http://arxiv.org/abs/2310.17782
Publikováno v:
Phys. Fluids 35, 093306 (2023)
Fluidization of solid particles by an ascending fluid is frequent in industry because of the high rates of mass and heat transfers achieved. However, in some cases blockages occur and hinder the correct functioning of the fluidized bed. In this paper
Externí odkaz:
http://arxiv.org/abs/2309.07976
Publikováno v:
Geophysical Research Letters, 50, e2023GL104125, 2023
We investigate the behavior of subaqueous barchans reaching dune-size obstacles by carrying out experiments where we varied the obstacle shape and size, the flow strength, and the grains' properties. We found that a subaqueous barchan can pass over o
Externí odkaz:
http://arxiv.org/abs/2307.07048