CFD Analysis of Journal Bearing with a Heterogeneous Rough/Smooth Surface
Mohammad Tauviqirrahman,
J. Jamari,
Arjuno Aryo Wicaksono,
M. Muchammad,
S. Susilowati,
Yustina Ngatilah,
Caecilia Pujiastuti
Affiliations
Mohammad Tauviqirrahman
Laboratory for Engineering Design and Tribology, Department of Mechanical Engineering, Diponegoro University, Jl. Soedharto SH, Tembalang, Semarang 50275, Indonesia
J. Jamari
Laboratory for Engineering Design and Tribology, Department of Mechanical Engineering, Diponegoro University, Jl. Soedharto SH, Tembalang, Semarang 50275, Indonesia
Arjuno Aryo Wicaksono
Laboratory for Engineering Design and Tribology, Department of Mechanical Engineering, Diponegoro University, Jl. Soedharto SH, Tembalang, Semarang 50275, Indonesia
M. Muchammad
Laboratory for Engineering Design and Tribology, Department of Mechanical Engineering, Diponegoro University, Jl. Soedharto SH, Tembalang, Semarang 50275, Indonesia
S. Susilowati
Faculty of Engineering, University of Pembangunan Nasional “Veteran” East Java, Jl. Raya Rungkut Madya Gunung Anyar, Surabaya 60294, Indonesia
Yustina Ngatilah
Faculty of Engineering, University of Pembangunan Nasional “Veteran” East Java, Jl. Raya Rungkut Madya Gunung Anyar, Surabaya 60294, Indonesia
Caecilia Pujiastuti
Faculty of Engineering, University of Pembangunan Nasional “Veteran” East Java, Jl. Raya Rungkut Madya Gunung Anyar, Surabaya 60294, Indonesia
In the present study, a computational investigation into acoustic and tribological performances in journal bearings is presented. A heterogeneous pattern, in which a rough surface is engineered in certain regions and is absent in others, is employed to the bearing surface. The roughness is assumed to follow the sand-grain roughness model, while the bearing noise is solved based on broadband noise source theory. Three types of heterogeneous rough/smooth journal bearings exhibiting different placement and number of the rough zone are evaluated at different combinations of eccentricity ratio using the CFD method. Numerical results show that the heterogeneous rough/smooth bearings can supply lower noise and larger load-carrying capacity in comparison with conventional bearings. Moreover, the effect on the friction force is also discussed.
