Analysis of the shroud leakage flow and mainflow interactions in high-pressure turbines using an unsteady computational fluid dynamics approach

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy

Volumn 221, Issue 6, 2007, Pages 837-848

  Adami, Paolo ^a   Martelli, F ^a   Cecchi, S ^b  

^a UNIVERSITY OF FLORENCE   (Italy)

^b ANSALDO ENERGIA   (Italy)

Author keywords

Leakage losses; Seals and cavity flows; Steam turbine; Unsteady computational fluid dynamics

Indexed keywords

FLOW INTERACTIONS; FLOW OF GASES; JETS; LEAKAGE (FLUID); NAVIER STOKES EQUATIONS; STEAM TURBINES;

CAVITY FLOW; LEAKAGE FLOW;

COMPUTATIONAL FLUID DYNAMICS;

COMPUTATIONAL FLUID DYNAMICS; FLOW INTERACTIONS; FLOW OF GASES; JETS; LEAKAGE (FLUID); NAVIER STOKES EQUATIONS; STEAM TURBINES;

EID: 35349011006     PISSN: 09576509     EISSN: None     Source Type: Journal    
DOI: 10.1243/09576509JPE466     Document Type: Conference Paper

References (11)

1. Traupel, W. Thermische Turbomaschinen, 1988 (Springer-Verlag, Berlin, Germany).
2. Denton, J. D. Loss mechanism in turbomachines. J. Turbomach., 1993, 115, 621-656.
3. Peters, P., Breising, V., Giboni, A., Lerner, C., and Pfost, H. The influence of the clearance of shrouded rotor blades on the development of the flow field and losses in the subsequent stator. ASME Turbo Expo, Munich, May 2000, 2000-GT-478.
4. Hunter, S. D. and Manwaring, S. R. Endwall cavity flow effects on gaspath aerodynamics in an axial flow turbine: part 1 - Experimental and numerical investigation. ASME Turbo Expo, Munich, May 2000, 2000-GT-651.
5. Wallis, A. M., Denton, J. D., and Demargne, A. A. J. The control of shroud leakage flows to reduce aerodynamic losses in a low aspect ratio shrouded axial flow turbine. J. Turbomach., 2001, 123, 334-341.
6. Anker, J. E. and Mayer J. F. Simulation of the interaction of labyrinth seal leakage flow and main flow in an axial turbine. ASME Turbo Expo, Amsterdam, Netherlands, 2002-GT-30348.
7. Pfau, A., Kalfas, A. I., and Abhari, R. S. Making use of labyrinth interaction flow. ASME Turbo Expo, Vienna, June 2004, GT2004-53797.
8. Adami, P., Martelli, F., and Michelassi, V. Three-dimensional investigations for axial turbines by an implicit unstructured multi-block flow solver. ASME Turbo Expo, Munich, May 2000, 2000-GT-0636.
9. Menter, F. R. Two-equation eddy-viscosity turbulence models for engineering applications. AIAA J., 1994, 32(8), 1598-1605.
10. Adami, P., Belardini, E., and Martelli, F. Development of an unsteady parallel approach for 3D stator-rotor interaction. 4th EUROTURBO Conference, Florence, 2001.
11. Adami, P., Belardini, E., and Martelli, F. Three-dimensional unsteady investigation of cooled HP turbine stages. 5th European Conference on Turbomachinery, Praha, 2003.