Investigation of three-dimensional unsteady flows in a two-stage shrouded axial turbine using stereoscopic PIV - Kinematics of shroud cavity flow

Journal of Turbomachinery

Volumn 130, Issue 1, 2008, Pages

  Il Yun, Yong ^a   Porreca, Luca ^b   Kalfas, Anestis I ^b   Song, Seung Jin ^a   Abhari, Reza S ^b  

^a Seoul National University   (South Korea)

^b ETH ZURICH   (Switzerland)

Author keywords

[No Author keywords available]

Indexed keywords

AERODYNAMICS; AXIAL FLOW TURBOMACHINERY; CRYSTALLOGRAPHY; DIGITAL SIGNAL PROCESSING; ELECTRIC GENERATORS; ENGINES; FLOW INTERACTIONS; FLOW OF FLUIDS; FLOW VISUALIZATION; FLUID DYNAMICS; FLUID MECHANICS; GAS DYNAMICS; ISOMERS; LEAKAGE (FLUID); MIXING; SEPARATION; STATORS; THREE DIMENSIONAL; TURBINES; UNSTEADY FLOW; VORTEX FLOW; VORTICITY; WALLS (STRUCTURAL PARTITIONS);

AERODYNAMIC PROBE MEASUREMENTS; AXIAL TURBINES; AXIAL VORTICITY; CASING WALL; CAVITY FLOWS; COMPLEX FLOWS; EXPERIMENTAL STUDIES; FAST RESPONSE; FLOW FEATURES; FLOW STREAMS; FLUID MOTIONS; LEAKAGE FLOWS; NON UNIFORMITIES; RADIAL MIGRATION; SEAL LEAKAGE; SHROUDED AXIAL TURBINE; SHROUDED TURBINE; STEREOSCOPIC PARTICLE IMAGE VELOCIMETRY (SPIV); STEREOSCOPIC PIV; THREE DIMENSIONAL (3D); TILTING MECHANISM; TIME-AVERAGED; TIME-AVERAGED FLOW; TRAILING EDGES; TWO STAGES; TWO-LAYER STRUCTURE (TLS); WAKE FLOWS;

RIVERS;

EID: 47649124198     PISSN: 0889504X     EISSN: None     Source Type: Journal    
DOI: 10.1115/1.2720873     Document Type: Article

References (24)

1. Denton, J. D., 1993, "Loss Mechanisms in Turbomachines - The 1993 IGTI Scholar Lecture," ASME J. Turbomach., 115(4), pp. 621-656.
2. Hunter, S. D., and Manwaring, S. R., 2000, "Endwall Cavity Flow Effects on Gaspath Aerodynamics in an Axial Flow Turbine - Part I: Experimental and Numerical Investigation," ASME Paper No. 2001-GT-651.
3. Wallis, A. M., Denton, J. D., and Demargne, A. A. J., 2001, "The Control of Shroud Leakage Flows to Reduce Aerodynamic Losses in a Low Aspect Ratio, Shrouded Axial Flow Turbine," ASME J. Turbomach., 123(2), pp. 334-341.
4. Peters, P., Breisig, V., Giboni, A., Lerner, C., and Pfost, H., 2000, "The Influence of the Clearance of Shrouded Rotor Blades on the Development of the Flowfield and Losses in the Subsequent Stator," ASME Paper No. 2000-GT-478.
5. Giboni, A., Menter, J. R., Peters, P., Wolter, K., Pfost, H., and Breisig, V., 2003, "Interaction of Labyrinth Seal Leakage Flow and Main Flow in an Axial Turbine," ASME Paper No. GT2003-38722.
6. Giboni, A., Wolter, K., Menter, J. R., and Pfost, H., 2004, "Experimental and Numerical Investigation Into the Unsteady Interaction of Labyrinth Seal Leakage Flow and Main Flow in a 1.5-Stage Axial Turbine," ASME Paper No. GT2004-53024.
7. Song, B. H., and Song, S. J., 2004, "Lateral Forces From Single Gland Rotor Labyrinth Seals in Turbines," ASME J. Eng. Gas Turbines Power, 126(3), pp. 626-634.
8. Pfau, A., Treiber, M., Sell, M., and Gyarmathy, G., 2001, "Flow Interaction From the Exit Cavity of an Axial Turbine Blade Row Labyrinth Seal," ASME J. Turbomach., 123(2), pp. 342-352.
9. Pfau, A., Schlienger, J., Rusch, D., Kalfas, A. I., and Abhari, R. S., 2005, "Unsteady Flow Interactions Within the Inlet Cavity of a Turbine Rotor Tip Labyrinth Seal," ASME J. Turbomach., 127(4), pp. 679-688.
10. Pfau, A., Kalfas, A. I., and Abhari, R. S., 2004, "Making Use of Labyrinth Interaction Flow," ASME Paper No. GT2004-53797.
11. Wolter, K., Peters, P., Giboni, A., Menter, J. R., and Pfost, H., 2005, "Experimental and Numerical Investigation of the Unsteady Leakage Flow Through the Rotor Tip Labyrinth of a 1.5-Stage Axial Turbine," ASME Paper No. GT2005-68156.
12. Porreca, L., Behr, T., Schlienger, J., Kalfas, A. I., Abhari, R. S., Ehrhard, J., and Janke, E., 2005, "Fluid Dynamics and Performance of Partially and Fully Shrouded Axial Turbines," ASME J. Turbomach., 127(4), pp. 668-678.
13. Porreca, L., Hollenstein, M., Kalfas, A. I., and Abhari, R. S., 2007, "Turbulence Measurements and Analysis in a Multi-Stage Axial Turbine" AIAA J. Propul. Power, 23(1), pp. 227-234.
14. Porreca, L., 2007, "Aerothermal Optimization of Partially Shrouded Axial Turoines," ETH Ph.D. dissertation N. 17138, Swiss Federal Institute of Technology, Zurich
15. Porreca, L., Yun, Y. I., Kalfas, A. I., Song, S. J., and Abhari, R. S., 2006, "Investigation of 3D Unsteady Flows in a Two-Stage Shrouded Axial Turbine Using Stereoscopic PIV and FRAP - Part I: Interstage Flow Interactions," ASME Paper No. GT2006-90752.
16. Westerweel, J., Dabiri, D., and Gharib, M., 1997, "The Effect of a Discrete Window Offset on the Accuracy of Cross-Correlation Analysis of Digital PIV Recordings," Exp. Fluids, 23(1), pp. 20-28.
17. Scarano, F., and Riethmuller, M. L., 1999, "Iterative Multigrid Approach in PIV Image Processing With Discrete Window Offset," Exp. Fluids, 26(6), pp. 513-523.
18. Westerweel, J., 1994, "Efficient Detection of Spurious Vectors in Particle Image Velocimetry," Exp. Fluids, 16(3-4), pp. 237-247.
19. Soloff, S. M., Adrian, R. J., and Liu, Z-.C., 1997, "Distortion Compensation for Generalized Stereoscopic Particle Image Velocimetry," Meas. Sci. Technol., 8(12), pp. 1441-1454.
20. Prasad, A. K., 2000, "Stereoscopic Particle Image Velocimetry," Exp. Fluids, 29(2), pp. 103-116.
21. Yun, Y. I., 2006, "Axial Vorticity in the Cavity of a Partially Shrouded Axial Turbine," Ph.D. thesis, Seoul National University, Seoul.
22. Raffel, M., Willert, C. E., and Kompenhans, J., 1998, Particle Image Velocimetry - A Practical Guide, Springer-Verlag, Berlin.
23. Lawson, N. J., and Wu, J., 1997, "Three-Dimensional Particle Image Velocimetry: Error Analysis of Stereoscopic Techniques," Meas. Sci. Technol., 8(8), pp. 894-900.
24. Schlienger, J., Pfau, A., Kalfas, A. I., and Abhari, R. S., 2003, "Effects of Labyrinth Seal Variation on Multistage Axial Turbine Flow," ASME Paper No. GT2003-38270.