| Revista: | Journal of the Brazilian Society of Mechanical Sciences |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312092 |
| ISSN: | 0100-7386 |
| Autores: | Cunha, Francisco Ricardo da1 Rosa, Otavio Silva Sousa, Aldo Joao de |
| Instituciones: | 1Universidade de Brasilia, Departamento de Engenharia Mecanica, Brasilia, Distrito Federal. Brasil |
| Año: | 2001 |
| Volumen: | 23 |
| Número: | 4 |
| Paginación: | 379-399 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | Microstructural changes, that is an important feature for the understanding of the velocity variance in sedimentation is investigated with numerical simulations. The simulations are used to describe velocity fluctuations and hydrodynamic dispersion in a suspension of interacting point-particles sedimenting in a rectangular box with periodic sides and impenetrable bottom and top. It is observed how the positions of the particles evolve in a finite container. The suspension that was initially random in the gravity direction only, tends to be fully randomized as a result of the relative arrangements of the particles and the hydrodynamic interactions between them. The computer simulations, based on statistics over a significant number of particle configurations, suggest velocity variances and diffusivities dependent on the size of the simulated system but with anisotropy in velocity fluctuations and diffusion coefficients nearly independent of the box size |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería hidráulica, Sedimentación, Fluctuaciones, Velocidad, Dispersión, Microestructuras |
| Keyword: | Engineering, Hydraulic engineering, Sedimentation, Fluctuations, Velocity, Dispersion, Microstructures |
| Texto completo: | Texto completo (Ver HTML) |
