| Journal: | Journal of the Brazilian Society of Mechanical Sciences |
| Database: | PERIÓDICA |
| System number: | 000312095 |
| ISSN: | 0100-7386 |
| Authors: | Amendola, Mariangela1 Moura, Carlos Antonio de2 Zago, Jose Vitorio Pulino, Petronio Gomes Neto, Francisco de Assis M |
| Institutions: | 1Universidade Estadual de Campinas, Florianopolis, Santa Catarina. Brasil 2Universidade Federal Fluminense, Niteroi, Rio de Janeiro. Brasil |
| Year: | 2001 |
| Volumen: | 23 |
| Number: | 3 |
| Pages: | 335-345 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | In this paper we present an algorithm for the numerical simulation of the cavitation in the hydrodynamic lubrication of journal bearings. Despite the fact that this physical process is usually modelled as a free boundary problem, we adopted the equivalent variational inequality formulation. We propose a two-level iterative algorithm, where the outer iteration is associated to the penalty method, used to transform the variational inequality into a variational equation, and the inner iteration is associated to the conjugate gradient method, used to solve the linear system generated by applying the finite element method to the variational equation. This inner part was implemented using the element by element strategy, which is easily parallelized. We analyse the behavior of two physical parameters and discuss some numerical results. Also, we analyse some results related to the performance of a parallel implementation of the algorithm |
| Disciplines: | Física y astronomía, Ingeniería |
| Keyword: | Dinámica de fluidos, Equipo y maquinaria, Ingeniería mecánica, Cavitación, Algoritmos, Método de elementos finitos, Lubricación, Hidrodinámica, Rodamiento |
| Keyword: | Physics and astronomy, Engineering, Fluid dynamics, Equipment and machinery, Mechanical engineering, Cavitation, Algorithms, Finite element method, Lubrication, Hydrodynamics, Bearing |
| Full text: | Texto completo (Ver HTML) |
