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TECHNICAL PAPERS

Deterministic Stress Modeling of Hot Gas Segregation in a Turbine

[+] Author and Article Information
J. Busby, R. Davis

United Technologies Research Center, 411 Silver Lane, East Hartford, CT 06108

D. Sondak

Boston University, Boston, MA 02215

B. Staubach

Pratt & Whitney, East Hartford, CT 06108

J. Turbomach 122(1), 62-67 (Feb 01, 1999) (6 pages) doi:10.1115/1.555428 History: Received February 01, 1999
Copyright © 2000 by ASME
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References

Saxer,  A. P., and Felici,  H. M., 1996, “Numerical Analysis of Three-Dimensional Unsteady Hot Streak Migration and Shock Interaction in a Turbine Stage,” ASME J. Turbomach., 118, pp. 268–277.
Dorney,  D. J., Davis,  R. L., and Edwards,  D. E., 1992, “Unsteady Analysis of Hot Streak Migration in a Turbine Stage,” J. Propul. Power, 8, No. 2, pp. 520–529.
Rai, M. M., and Dring, R. P., 1990, “Navier-Stokes Analyses of the Redistribution of Inlet Temperature Distortions in a Turbine,” J. Propul. Power, 6 .
Takahashi, R., and Ni, R. H., 1991, “Unsteady Hot Streak Simulation Through 1-12 Stage Turbine,” AIAA Paper No. 91-3382.
Adamczyk, J. J., 1985, “Model Equation for Simulating Flows in Multistage Turbomachinery,” ASME Paper No. 85-GT-226.
Davis, R. L., Shang, T., Buteau, J., and Ni, R. H., 1996, “Prediction of 3-D Unsteady Flow in Multi-stage Turbomachinery Using an Implicit Dual Time-Step Approach,” AIAA Paper No. 96-2565.
Ni,  R. H., 1981, “A Multiple Grid Scheme for Solving the Euler Equations,” AIAA J., 20, No. 11, pp. 1565–1571.
Ni, R. H., and Bogoian, J. C., 1989, “Predictions of 3-D Multi-Stage Turbine Flow Fields Using a Multiple-Grid Euler Solver,” AIAA Paper No. 89-0203.
Ni, R. H., and Sharma, O. P., 1990, “Using a 3-D Euler Flow Simulation to Assess Effects of Periodic Unsteady Flow Through Turbines,” AIAA Paper No. 90-2357.
Baldwin, B. S., and Lomax, H., 1978, “Thin Layer Approximation and Algebraic Model for Separated Turbulent Flows,” AIAA Paper No. 78-257.
Giles,  M., 1990, “Nonreflecting Boundary Conditions for Euler Equation Calculations,” AIAA J., 28, No. 12, pp. 2050–2058.
Sondak, D. L., Dorney, D. J., and Davis, R. L., 1996, “Modeling Turbomachinery Unsteadiness With Lumped Deterministic Stresses,” AIAA Paper No. 96-2570.

Figures

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Unsteady velocity decomposition
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Relative total temperature distributions resulting from the addition of each component LDS term
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Relative total temperature segregation at rotor midchord
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Relative total temperature segregation at rotor trailing edge
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Circumferentially averaged, relative total temperature on outer air seal
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Inviscid and viscous grid distributions
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Time-history of the unsteady loads on the blade
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Convergence history for the steady three-dimensional viscous solution with inviscid LDS model
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Time-averaged relative total temperature distribution on blade. (a) 20, (b) 50, (c) 80 percent span.
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Relative total temperature contours on the rotor surface
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Relative total temperature segregation at rotor leading edge

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