Artículo
Movement initiation of millimeter particles on a rotating rough surface: The role of adhesion
Valenzuela Aracena, Karina de Los Angeles
; Uñac, Rodolfo Omar
; Ippolito, Irene Paula
; Vidales, Ana Maria
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
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Fecha de publicación:
12/2020
Editorial:
Elsevier Science Inc
Revista:
Particuology
ISSN:
1674-2001
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We performed experiments to determine the critical moment for movement initiation of a millimeter bead on a rotating rough surface. The corresponding critical angular velocities were measured for glass and stainless-steel ball bearings over two different rough surfaces with glued glass beads. A basic theoretical analysis was developed to explain the observed results. Although the expectation of a simple approach with the presence of the obstacles offered by a rough surface could be sufficient to describe the problem, we prove here that the sole consideration of these obstacles, and even friction, are insufficient to explain the results in the range of a few-millimeter glass particles. Where the thermodynamic work of adhesion between surfaces is significant, the adhesion forces must be considered in the force balance for particle detachment. This effect is a determinant for describing theoretically and numerically the dynamics of millimeter particles.
Palabras clave:
ADHESION
,
CENTRIFUGATION
,
DETACHMENT
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Articulos(INFAP)
Articulos de INST. DE FISICA APLICADA "DR. JORGE ANDRES ZGRABLICH"
Articulos de INST. DE FISICA APLICADA "DR. JORGE ANDRES ZGRABLICH"
Citación
Valenzuela Aracena, Karina de Los Angeles; Uñac, Rodolfo Omar; Ippolito, Irene Paula; Vidales, Ana Maria; Movement initiation of millimeter particles on a rotating rough surface: The role of adhesion; Elsevier Science Inc; Particuology; 53; 12-2020; 92-99
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