38 citations · 107 across the 9 of their papers we have counts for
9 papers
Barchan-barchan and barchan-obstacle interactions: insights from grain-scale studies
Erick de Moraes Franklin, Willian Righi Assis, Danilo da Silva Borges +1
Sand dunes are bedforms that grow due to the action of a fluid flow over a sand bed or pile. Whenever the fluid flow is mainly in one direction and the availability of sand is limi…
Barchans interacting with dune-size obstacles: details of the fluid flow and motion of grains
Nicolao Cerqueira Lima, Willian Righi Assis, Danilo da Silva Borges +1
We investigate details of the interaction of subaqueous barchans with dune-size obstacles by carrying out numerical simulations where the fluid is solved at the grain scale and the…
Barchan-barchan dune repulsion investigated at the grain scale
Nicolao Cerqueira Lima, Willian Righi Assis, Carlos Azael Alvarez +1
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 chasin…
Impact craters formed by spinning granular projectiles
Douglas Daniel de Carvalho, Nicolao Cerqueira Lima, Erick de Moraes Franklin
Craters formed by the impact of agglomerated materials are commonly observed in nature, such as asteroids colliding with planets and moons. In this paper, we investigate how the pr…
Roles of packing fraction, microscopic friction and projectile spin in cratering by impact
Douglas Daniel de Carvalho, Nicolao Cerqueira Lima, Erick de Moraes Franklin
From small seeds falling from trees to asteroids colliding with planets and moons, the impact of projectiles onto granular targets occurs in nature at different scales. In this pap…
Grain-scale computations of barchan dunes
Nicolao Cerqueira Lima, Willian Righi Assis, Carlos Azael Alvarez +1
Barchans are crescent-shaped dunes commonly found in diverse environments and scales: from the 10-cm-long barchans found under water to the 1-km-long barchans on Mars, passing by t…
Contacts, motion and chain-breaking in a two-dimensional granular system displaced by an intruder
Douglas Daniel de Carvalho, Nicolao Cerqueira Lima, Erick de Moraes Franklin
We investigate numerically how the motion of an intruder within a two-dimensional granular system affects its structure and produces drag on the intruder. We made use of discrete n…
Resolved CFD-DEM simulations of the hydraulic conveying of coarse grains through a very-narrow elbow
Elmar Anton Schnorr Filho, Nicolao Cerqueira Lima, Erick de Moraes Franklin
This paper investigates numerically the hydraulic conveying of solids through a 90 elbow that changes the flow direction from horizontal to vertical, in the very-narrow c…
Motion and clustering of bonded particles in narrow solid-liquid fluidized beds
Fernando David Cúñez, Nicolao Cerqueira Lima, Erick de Moraes Franklin
This paper presents an experimental and numerical investigation of solid-liquid fluidized beds consisting of bonded spheres in very narrow tubes, i.e., when the ratio between the t…