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TECHNICAL PAPERS

Aeroelasticity Analysis of Air-Riding Seals for Aero-Engine Applications

[+] Author and Article Information
A. I. Sayma, C. Bréard, M. Vahdati, M. Imregun

Imperial College of Science Technology and Medicine, Mechanical Engineering Department, Exhibition Road, London SW7 2BX, UK

J. Tribol 124(3), 607-616 (May 31, 2002) (10 pages) doi:10.1115/1.1467086 History: Received July 11, 2000; Revised October 09, 2001; Online May 31, 2002
Copyright © 2002 by ASME
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References

Munson,  J., and Pecht,  G., 1992, “Development of Film-Riding Face Seals for a Gas Turbine Engine,” Tribol. Trans., 65(1), pp. 65–70.
Hwang, M. F., and Pope, A., 1995, “Advanced Seals for Engine Secondary Flow Path,” 31stAIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, San Diego, CA, AIAA-95-2618.
Wolfe, C. E., et al., 1996, “Full Scale Testing and Analytical Validation of an Aspirating Face Seal,” 32ndAIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Lake Buena Vista, FL, AIAA-96-2802.
Turnquist, N. A., Tseng, T. W., McNickle, A. D., and Dierkes, T. J., 1998, “Analysis and Full Scale Testing of an Aspirating Face Seal with Improved Flow Isolation,” 34thAIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
Gardner, J. F., 1999, “Development of a High Speed, High Temperature Compressor Discharge Seal,” 35thAIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
Shapiro, W., and Nikayuna, N. Y., 1997, “Stiffness Enhancements of a 36 Inch Aspirating Seal,” AIAA Paper 97-2875.
Turnquist, N. A., Tseng, T. W., McNickle, A. D., Steinetz, and B. M., 1999, “Full Scale Testing of an Aspiring Face Seal with Angular Misalignment,” 35thAIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
Begepalli, B., et al., 1996, “Dynamic Analysis of an Aspirating Face Seal for Aircraft-Engine Applications,” 32ndAIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Lake Buena Vista, FL, AIAA-96-2803.
Leefe, S., 1994, “Modelling of Plain-Face Gas Seal Dynamics,” 14th Int Conference on Fluid Sealing, 397-424, BHR Group Conference Series No 9, Firenze, Italy.
Sayma,  A. I., Vahdati,  M., Sbardella,  L., and Imregun,  M., 2000, “Modelling of 3D Viscous Compressible Turbomachinery Flows Using Unstructured Hybrid Grids,” AIAA J., 38(6), pp. 945–954.
Sayma,  A. I., Vahdati,  M., and Imregun,  M., 2000, “An Integrated Non-Linear Approach for Turbomachinery Forced Response Predictions: Part I—Formulation,” J. Fluids Struct., 14, pp. 87–101.
Vahdati,  M., Sayma,  A. I., and Imregun,  M., 2000, “An Integrated Non-linear Approach for Turbomachinery Forced Response Predictions: Part II—Case Studies,” J. Fluids Struct., 14, pp. 103–125.
Baldwin, B. S., and Barth, T. J., 1991, “A One-Equation Turbulence Transport Model for High Reynolds Number Wall-bounded Flows,” AIAA Paper 91-0610.
Essers,  J. A., Delanaye,  M., and Rogiest,  P., 1995, “Upwind-Biased Finite-Volume Technique Solving Navier-Stokes Equations on Irregular Meshes,” AIAA J., 33, pp. 833–842.
Swanson,  R. C., and Turkel,  E., 1992, “On Central-Difference and Upwind Schemes,” J. Comput. Phys., 101, pp. 292–306.
Jorgenson,  P. C., and Turkel,  E., 1993, “Central Difference TVD Schemes for Time Dependent and Steady State Problems,” J. Comput. Phys., 107, pp. 297–308.
Roe,  P., 1981, “Approximate Riemann Solvers, Parameter Vectors and Difference Schemes,” J. Comput. Phys., 43, pp. 357–372.
Melson, N. D., Sanetrik, M. D., and Atkins, H. L., 1993, “Time-Accurate Navier-Stokes Calculations with Multigrid Acceleration,” Proceedings of the Sixth Copper Mountain Conference on Multigrid Methods.
Newmark,  N. M., 1959, “A Method of Computation for Structural Dynamics,” ASCE Journal of Engineering Mechanics Division, 85, pp. 67–94.
Vincenti, W. G., and Kruger, C. H., 1965, Introduction to Physical Gas Dynamics, J. Wiley and Sons, NY.

Figures

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Time marching procedure for aeroelasticity calculations
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Median dual control volume for edge IJs, showing nodes I and Js, and metric vector η⃗IJs
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Velocity vectors showing the tip gap flow over a transonic turbine blade
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Predicted and measured unsteady pressure time histories for two locations near the tip
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Schematic diagram of a generic seal geometry
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Mach number contours in the seal gap
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Velocity vectors for seal flow
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Convergence time history
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Lift as a function of the seal gap for various pressure ratios
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Lift as a function of the pressure ratio for various seal gaps
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Mass flow rate as a function of the seal gap and pressure ratio
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Time history of the seal vibration (minus sign indicates away from the seal)
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Seal vibration with reduced spring stiffness (minus sign indicates away from the seal)

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