A bulk flow model of a brush seal systemFibers can be readily fabricated into a variety of seal configurations that are compliant and responsive to high speed or lightly loaded systems. A linear, circular, or contoured brush seal system is a contact seal consisting of the bristle pattern and hardened interface. When compared to a labyrinth seal, the brush seal system is superior and features low leakage, dynamic stability, and permits compliant structures. But in turn, the system usually requires a hardened smooth interface and permits only limited pressure drops. Wear life and wear debris for operations with static or dynamic excitation are largely undetermined. A seal system involves control of fluid within specific boundaries. The brush and rub ring (or rub surface) form a seal system. Design similitudes, a bulk flow model, and rub ring (interface) coatings are discussed. The bulk flow model calculations are based on flows in porous media and filters. The coatings work is based on experience and expanded to include current practice.
Document ID
19920033072
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hendricks, R. C. (NASA Lewis Research Center Cleveland, OH, United States)
Schlumberger, S. (NASA Lewis Research Center Cleveland, OH, United States)
Braun, M. J. (NASA Lewis Research Center Cleveland, OH, United States)
Choy, F. (Akron, University OH, United States)
Mullen, R. L. (Case Western Reserve University Cleveland, OH, United States)