This paper is dedicated to experimental and numerical investigations of self-adaptive seals under 2D static conditions. Besides the leakage flow across the seal / rotor combination, the distribution of static pressures within the air bearing clearance is measured. The bearing face flow is studied extensively, focusing on its dependency to the differential pressure and the axial clearance. Unchoked and choked flow regimes are tested and analyzed independently from each other. Correlation curves are established to describe the dependency of the test parameters to either the leakage rate or the mean static pressure in the bearing clearance. Furthermore, numerical predictions gained from CFD simulations are presented and validated and provide a better understanding of the flow physic processes within the bearing face.
Experimental Investigation and Numerical Validation of the Bearing Face Flow of an Adaptive Seal
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Zimmermann, A, Guemmer, V, Nguyen, T, & Giepman, RHM. "Experimental Investigation and Numerical Validation of the Bearing Face Flow of an Adaptive Seal." Proceedings of the ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. Volume 7B: Structures and Dynamics. Oslo, Norway. June 11–15, 2018. V07BT34A015. ASME. https://doi.org/10.1115/GT2018-75503
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