A stable numerical strategy for Reynolds-Rayleigh-Plesset coupling
Abstract
The coupling of Reynolds and Rayleigh-Plesset equations has been used in several works to simulate lubricated devices considering cavitation. The numerical strategies proposed so far are variants of a staggered strategy where Reynolds equation is solved considering the bubble dynamics frozen, and then the Rayleigh-Plesset equation is solved to update the bubble radius with the pressure frozen. We show that this strategy has severe stability issues and a stable methodology is proposed. The proposed methodology performance is assessed on two physical settings. The first one concerns the propagation of a decompression wave along a fracture considering the presence of cavitation nuclei. The second one is a typical journal bearing, in which the coupled model is compared with the Elrod-Adams model.
Cite
@article{arxiv.1712.01705,
title = {A stable numerical strategy for Reynolds-Rayleigh-Plesset coupling},
author = {Alfredo Jaramillo and Gustavo C. Buscaglia},
journal= {arXiv preprint arXiv:1712.01705},
year = {2018}
}
Comments
26 pages, 19 figures