| Journal: | Journal of the Brazilian Society of Mechanical Sciences and Engineering |
| Database: | PERIÓDICA |
| System number: | 000312364 |
| ISSN: | 1678-5878 |
| Authors: | Petry, Adriane P1 Awruch, Armando M2 |
| Institutions: | 1Universidade Federal do Rio Grande do Sul, Departamento de Engenharia Mecanica, Porto Alegre, Rio Grande do Sul. Brasil 2Universidade Federal do Rio Grande do Sul, Programa de Engenharia Civil, Porto Alegre, Rio Grande do Sul. Brasil |
| Year: | 2006 |
| Season: | Abr-Jun |
| Volumen: | 28 |
| Number: | 2 |
| Pages: | 224-232 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | The main objectives of this work are the formulation, implementation and applications of a numerical algorithm to simulate turbulent, incompressible, isothermal flows. The transient three-dimensional flow is analyzed using an explicit Taylor-Galerkin scheme and the finite element method with hexahedrical eight-node element. Turbulence is simulated using Large Eddy Simulation. For sub-grid scales two models were implemented, the classical Smagorinsky's model and the dynamic eddy viscosity model. For the second filtration, which is necessary in the dynamic model, a new method was developed based on independent finite elements that involve each node in the original mesh. The implemented scheme is efficient and good results with low additional computational cost were obtained. Results for two classical problems, the driven cavity and the backward facing step are presented. Comments about the model applicability for flows with high Reynolds numbers are also presented |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería mecánica, Turbulencia, Modelos dinámicos, Método de elementos finitos, Dinámica de fluidos |
| Keyword: | Engineering, Mechanical engineering, Turbulence, Dynamic model, Finite element method, Fluid dynamics |
| Full text: | Texto completo (Ver PDF) |
