Numerical Simulation of the Cavitation in the Hydrodynamic Lubrication of Journal Bearings: a Parallel Algorithm



Título del documento: Numerical Simulation of the Cavitation in the Hydrodynamic Lubrication of Journal Bearings: a Parallel Algorithm
Revista: Journal of the Brazilian Society of Mechanical Sciences
Base de datos: PERIÓDICA
Número de sistema: 000312095
ISSN: 0100-7386
Autores: 1
2


Instituciones: 1Universidade Estadual de Campinas, Florianopolis, Santa Catarina. Brasil
2Universidade Federal Fluminense, Niteroi, Rio de Janeiro. Brasil
Año:
Volumen: 23
Número: 3
Paginación: 335-345
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental
Resumen en inglés 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
Disciplinas: Física y astronomía,
Ingeniería
Palabras clave: 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
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