Algoritmo para determinar cavitación en un par eje-cojinete con ranura axial y desalineación paralela//An algorithm to determine cavitation in a journal bearing with axial groove and parallel misalignment

Authors

  • Hassán Lombera-Rodríguez Universidad de las Ciencias Informáticas
  • Carlos Eulalio Novo-Soto Universidad de las Ciencias Informáticas

Abstract

El objetivo del trabajo fue proporcionar un algoritmo computacional para predecirla ocurrencia de la cavitaciónen el lubricante de un par eje-cojinete,sometido a un desplazamiento radial conocido.El dispositivo se compone de un cilindro exterior que rodea un eje, ambos separados por un lubricante que evita el contacto. Se considera una ranura de alimentación axial y una desalineación paralela. Las incógnitas del problema son el campo de presión del lubricante, que satisface el modelo de cavitación de Reynolds, y la fuerza ejercida por este. El problema se resuelve computacionalmente mediante un método de gradiente conjugado precondicionado, modificado con técnicas de proyección y reinicialización para afrontar la cavitación. La estrategia numérica adoptada explota las propiedades del modelo matemático subyacente y aporta otra forma de solución al problema en cuestión, diferente de las que existen en la literatura. 

Palabras claves: cavitación, desalineación paralela, gradiente conjugado precondicionado, par eje-cojinete.
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Abstract

The objective of this paper is to provide a computational algorithm to predictcavitation within the lubricant of a journal bearing subjected to parallel misalignment. The device consists of an external cylinder surrounding a rotating shaft, both separated by a lubricant to prevent contact. An axial supply groove is considered as well as a parallel misalignment. The unknowns of the problem are the lubricant pressure field, satisfying the Reynolds cavitation model, and the force exerted by this. The problem is solved by the preconditioned conjugate gradient method, modified with both projection and restarting strategies to account for cavitation. The numerical approach takes advantage of the underlying mathematical model and provides another way of solution to the related problem, different from the ones that exist in the literature.

Key words: cavitation, parallel misalignment, preconditioned conjugate gradient method, journal bearing

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Published

2018-03-01

How to Cite

1.
Lombera-Rodríguez H, Novo-Soto CE. Algoritmo para determinar cavitación en un par eje-cojinete con ranura axial y desalineación paralela//An algorithm to determine cavitation in a journal bearing with axial groove and parallel misalignment. Ing. Mec. [Internet]. 2018 Mar. 1 [cited 2025 Sep. 13];21(2):108-16. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/587

Issue

Vol. 21 No. 2 (2018): mayo-agosto. En homenaje al Profesor Dr Carlos Eulalio Novo Soto

Section

Original article

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