Evaluating leakage from radial lip seals affected by bearing area of shaft topography
conference contributionposted on 11.03.2019 by Emilia Kozuch, Petros Nomikos, Ramin Rahmani, Nick Morris, Homer Rahnejat
Any type of content contributed to an academic conference, such as papers, presentations, lectures or proceedings.
This paper investigates the influence of shaft surface topography upon seal leakage, when using different surface finishing and manufacturing techniques. A hydrodynamic model is used to determine the generated pressure distribution within the seal-shaft contact. Pertinent statistical parameters are selected to distinguish between the various shaft surface topographies, which can contribute to an effectively sealed conjunction. Results obtained from the hydrodynamic model shows the creation of multiple cavitated regions caused by the deep valleys. This leads to thinner film thickness on the surface plateau and therefore lower predicted leakage rates. The distribution of peaks and valleys is shown to be a factor in differentiating contact performance.
The authors are grateful to the Engineering and Physical Science Research Council (EPSRC) for the financial support extended to this research through the Doctoral Training Program (DTP) scheme
- Mechanical, Electrical and Manufacturing Engineering