Artículo
Boundary layer effects in droplet splashing
Autor/es | Riboux, Guillaume Maurice
Gordillo Arias de Saavedra, José Manuel |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos |
Fecha de publicación | 2017-07 |
Fecha de depósito | 2024-05-29 |
Publicado en |
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Resumen | Adrop falling onto a solid substrate will disintegrate into smaller parts when its impact velocity, V , exceeds the so called critical velocity for splashing, i.e., when V >V∗. Under these circumstances, the very thin ... Adrop falling onto a solid substrate will disintegrate into smaller parts when its impact velocity, V , exceeds the so called critical velocity for splashing, i.e., when V >V∗. Under these circumstances, the very thin liquid sheet ejected tangentially to the solid after the drop touches the substrate, lifts off as a consequence of the aerodynamic forces exerted on it. Subsequently, the growth of capillary instabilities break the toroidal rim bordering the ejecta into smaller droplets, violently ejected radially outwards, provoking the splash [1]. In this contribution, the effect of the growth of the boundary layer is included into the splash model presented in [1], obtaining very good agreement between the measured and the predicted values of V ∗ for wide ranges of liquid and gas material properties, atmospheric pressures and substrate wettabilities. Our new description also modifies the way the instant of time at which the liquid sheet is first ejected, which can now be determined in a much more straightforward manner than that proposed in |
Agencias financiadoras | Ministerio de Economía y Competitividad (MINECO). España Ministerio de Economía y Competitividad (MINECO). España |
Identificador del proyecto | DPI201459292-C3-2-P
DPI2015-71901REDT |
Cita | Riboux, G.M. y Gordillo Arias de Saavedra, J.M. (2017). Boundary layer effects in droplet splashing. Physical Review E, 96 (1), 013105. https://doi.org/10.1103/PhysRevE.96.013105. |
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