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Compliant turbomachine sealing
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Deng, D. Hendricks, R. C. Braun, M. J. Hendricks, J. A. |
| Copyright Year | 2011 |
| Description | Sealing interface materials and coatings are sacrificial, giving up their integrity for the benefit of the component. Seals that are compliant while still controlling leakage, dynamics, and coolant flows are sought to enhance turbomachine performance. Herein we investigate the leaf-seal configuration. While the leaf seal is classified as contacting, a ready modification using the leaf-housing arrangement in conjunction with an interface film rider (a bore seal, for example) provides for a film-riding noncontact seal. The leaf housing and leaf elements can be made from a variety of materials from plastic to ceramic. Four simplistic models are used to identify the physics essential to controlling leakage. Corroborated by CFD, these results provide design parameters for applications to within reasonable engineering certainty. Some potential improvements are proposed. |
| File Size | 2511521 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20110012885 |
| Archival Resource Key | ark:/13960/t9r25xs05 |
| Language | English |
| Publisher Date | 2011-05-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Leakage Thin Films Cavities Computational Fluid Dynamics Coolants Turbomachinery Elastic Properties Ceramics Design Analysis Sealing 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 |
