INTEC   05402
INSTITUTO DE DESARROLLO TECNOLOGICO PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
On the search for numerical boundary conditions for the computation of dynamic contact lines
Autor/es:
MARIA DELIA GIAVEDONI; DIEGO M. CAMPANA; FERNANDO A. SAITA; RAMÓN CERRO
Lugar:
Saint Paul, Minnessota
Reunión:
Simposio; 15th International Coating Science and Technology Symposium (ISCST); 2010
Resumen:
Theoretical
understanding of the combined effect of different forces on the movement of
dynamic contac lines is one of the outstanding problems in fluid mechanics.
Much research has been done to understand this problem since the pioner work of
Huh and Scriven (JCIS, 1971). Although flawless from a mathematical point of
view, Huh and Scriven solution configures a modern fluid dynamics paradox
(Fuentes and Cerro, 2005). Unlike
most physical phenomena where small causes result in small effects and large
causes result in large effects, static and dynamic contact lines are
macroscopic phenomena but depend (for small Capillary numbers) strongly on
short and long-range molecular forces, of sub-micrometer range. Molecular,
electrostatic and structural forces near a triple, fluid-liquid-solid contact
line are responsible for static configurations and static contact angles and
also for macroscopic flow patterns in the vicinity of dynamic contact lines at
small Capillary numbers.