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Face-seal lubrication: 1: proposed and published models
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ludwig, L. P. |
| Copyright Year | 1976 |
| Description | The numerous published theories on the mechanism of hydrodynamic lubrication of face seals were reviewed. These theories employ either an inclined-slider-bearing macrogeometry or an inclined-slider-bearing microgeometry to produce hydrodynamic pressure that separates the surfaces of the primary seal. Secondary seal friction and primary ring inertia effects are not considered. Hypothetical seal operating models were devised to include secondary seal friction and primary ring inertia effects. It was hypothesized that these effects induce relative angular misalinement of the primary seal faces and that this misalinement is, in effect, an inclined slider macrogeometry. Stable running was postulated for some of these hypothetical operating models. In others, periodic loss of hydrodynamic lubrication was postulated to be possible with certain combinations of waviness and angular misalinement. Application of restrictions that apply to seal operation led to a hydrodynamic governing equation for the new model that is a two-dimensional, time-dependent Reynolds equation with the short-bearing approximation. |
| File Size | 1802720 |
| Page Count | 39 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19760014472 |
| Archival Resource Key | ark:/13960/t2h756d43 |
| Language | English |
| Publisher Date | 1976-04-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Seals Stoppers Friction Hydrodynamics Mathematical Models Lubrication Reynolds Equation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
