Computational Investigation of Oil Film Pressure Profile in Journal Bearings
Marey, N., Aly, A., Hegazy, E. (2018). Computational Investigation of Oil Film Pressure Profile in Journal Bearings. EKB Journal Management System, 22(2), 40-45. doi: 10.21608/pserj.2018.32095
Nour Marey; Amman Aly; El-Sayed Hegazy. "Computational Investigation of Oil Film Pressure Profile in Journal Bearings". EKB Journal Management System, 22, 2, 2018, 40-45. doi: 10.21608/pserj.2018.32095
Marey, N., Aly, A., Hegazy, E. (2018). 'Computational Investigation of Oil Film Pressure Profile in Journal Bearings', EKB Journal Management System, 22(2), pp. 40-45. doi: 10.21608/pserj.2018.32095
Marey, N., Aly, A., Hegazy, E. Computational Investigation of Oil Film Pressure Profile in Journal Bearings. EKB Journal Management System, 2018; 22(2): 40-45. doi: 10.21608/pserj.2018.32095

Computational Investigation of Oil Film Pressure Profile in Journal Bearings

Port-Said Engineering Research Journal
Article 5, Volume 22, Issue 2 - Serial Number 1110, September 2018, Page 40-45  XML PDF (860.52 K)
Document Type: Original Article
DOI: 10.21608/pserj.2018.32095
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Authors
Nour Marey email 1; Amman Aly1; El-Sayed Hegazy2
1Arab Academy for Science, Technology and Maritime Transport
2Marine Engineering and Naval Architecture Department, Faculty of Engineering, Port Said University, Port Said, Egypt
Abstract
Lubrication of journal bearing in ship shafting systems is facing a problem in the slow speed range, where oil film created pressure depends on shaft speed, among many other factors. Hence, the slower the speed the lower the pressure will be, which shifts lubrication from hydrodynamic to boundary one. An experimental journal bearing test rig (JBTR) has been designed and established to simulate typical journal bearing for ship’s shafting system. A theoretical validation study has been undertaken and good agreement with the test rig pressure readings was found. The test rig is capable of carrying out wide range of tests to investigate oil film pressure profile dependence on many parameters regarding design modification, oil properties, material properties, and many other factors. A new Computational Fluid Dynamic (CFD) model has been built for the sake of coupling future experimental investigations with computerized ones. The CFD model was created using the well-known CFD package Ansys ver. 15.0. The effect of shaft speed on oil film pressure profile was studied using the CFD model as a verification test. The model results were contrasted to the experimental results and an acceptable deviation range was found.
Keywords
CFD analysis; hydrodynamic lubrication; boundary lubrication; experimental test; journal bearing (JB); Propulsion Shafting System
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