| Revista: | Journal of the Brazilian Society of Mechanical Sciences and Engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312165 |
| ISSN: | 1678-5878 |
| Autores: | Strauss, D1 Azevedo, J.L.F |
| Instituciones: | 1Centro Tecnico Aeroespacial, Instituto de Aeronautica e Espaco, Sao Jose dos Campos, Sao Paulo. Brasil |
| Año: | 2003 |
| Periodo: | Oct-Dic |
| Volumen: | 25 |
| Número: | 4 |
| Paginación: | 315-324 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Descriptivo |
| Resumen en inglés | The paper describes the implementation details and validation results for an agglomeration multigrid procedure developed in the context of hybrid, unstructured grid solutions of aerodynamic flows. The governing equations are discretized using an unstructured grid finite volume method, which is capable of handling hybrid unstructured grids. A centered scheme as well as a second order version of Lious AUSM+ upwind scheme are used for the spatial discretization. The time march uses an explicit 5-stage Runge-Kutta time-stepping scheme. Convergence acceleration to steady state is achieved through the implementation of an agglomeration multigrid procedure, which retains all the flexibility previously available in the unstructured grid code. The calculation capability created is validated considering 2-D laminar and turbulent viscous flows over a flat plate. Studies of the various parameters affecting the multigrid acceleration performance are undertaken with the objective of determining optimal numerical parameter combinations |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería mecánica, Aglomerados, Multiredes, Flujos turbulentos, Convergencia, Aceleración, Método de volumen finito, Redes inestructuradas |
| Keyword: | Engineering, Mechanical engineering, Agglomerates, Multigrids, Turbulent flow, Convergence, Acceleration, Finite volume method, Unstructured grids |
| Texto completo: | Texto completo (Ver HTML) |
