Abstract
The unsteady flow in an axial flow turbine stage with a second stator blade row is investigated by means of a Navier-Stokes code especially developed for turbomachinery applications. Due to the low aspect ratio of the blades of the test machine a highly three-dimensional flow dominated by secondary flow structures is observed. Simulations that include all blade rows are carried out. The present investigation focuses on the stator/rotor/stator interaction effects. Secondary flow structures and their origins are identified and tracked on their way through the passage. The time-dependent secondary velocity vectors and total pressure distributions as well as flow angles and Mach number distributions as perturbation from the time-mean flow field are shown in cross-flow sections and azimuthal cuts throughout the turbine. Simulations and measurements show a good overall agreement in the time-dependent flow behaviour as well as in the secondary flow structures.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Dawes, W. N.: A Numerical Study of the Interaction of a Transonic Compressor Rotor Overtip Leakage Vortex with the Following Stator Blade Row. ASME 94-GT-156 (1994)
Eulitz, F., Engel, K., Gebing, H.: Numerical Investigation of the Clocking Effects in a Multistage Turbine. ASME 96-GT-026 (1996)
Gallus, H.E., Zeschky, J. and Hah, C.: Endwall and Unsteady Flow Phenomena in an Axial Turbine Stage. ASME 94-GT-143 (1994)
Giles, M. B.: Non-Reflecting Boundary Conditions for the Euler Equations. Tech. Rep. TR-88–1. MIT CFD Laboratory (1988)
Giles, M. B.: UNSFLO: A Numerical Method for the Calculation of Unsteady Flow in Turbomachinery. GTL Rep. No. 205. MIT Gas Turbine Laboratory (1991)
Hah, C., Copenhaver, W.W. and Puterbauch, S.L.: Unsteady Aerodynamic Flow phenomena in a Transonic Compressor Stage. AIAA-93–1868 (1993)
Hall, E. J.: Aerodynamic modelling of Multistage Compressor Flowfields — Partl: Analysis of Rotor/Stator/Rotor Aerodynamic Interaction. ASME 97GT-344 (1997)
He, L.: Time-Marching Calculations of Unsteady Flows, Blade Row Interaction and Flutter. VKI-LS 1996–05 (1996)
Jameson, A., Schmidt, W., Turkel, E.: Numerical Solutions of the Euler Equations by Finite Volume Methods Using Runge Kutta Time-Stepping Schemes. AIAA 81–1259 (1981)
Jameson, A.: Time Dependent Calcuations Using Multigrid, with Applications to Unsteady Flows Past Airfoils and Wings. AIAA-91–1596 (1991)
Jung, A. R., Mayer, J. F., Stetter, H.: Simulation of 3D-Unsteady Stator/Rotor Interaction in Turbomachinery Stages of Arbitrary Pitch Ratio. ASME 96-GT69 (1996)
Merz, R., Krückels, J., Mayer, J. F., Stetter, H.: Calculation of Three-Dimensional Viscous Transonic Turbine Stage Flow Including Tip Clearance Effects. ASME 95-GT-76 (1995)
Valkov, T. and Tan, C.S.: Control of the Unsteady Flow in a Stator Blade Row Interacting with Upstream Moving Wakes. ASME 93-GT-23 (1993)
Walraevens, R. E., Gallus, H. E.: Stator-Rotor-Stator Interaction in an Axial Flow Turbine and its Influence on Loss Mechanisms. AGARD-CP-571 (1996) 39/1–39/14
Walraevens, R. E., Gallus, H. E., Jung, A. R., Mayer, J. F., Stetter, H.: Experimental and Computational Study of the Unsteady Flow in a 1.5 Stage Axial Turbine with Emphasis on the Secondary Flow in the Second Stator, ASME Paper 98-GT-254 (1998).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1999 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Jung, A.R., Mayer, J.F., Stetter, H. (1999). Unsteady Flow Simulation in an Axial Flow Turbine Using a Parallel Implicit Navier-Stokes Method. In: Krause, E., Jäger, W. (eds) High Performance Computing in Science and Engineering ’98. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-58600-2_28
Download citation
DOI: https://doi.org/10.1007/978-3-642-58600-2_28
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-63661-5
Online ISBN: 978-3-642-58600-2
eBook Packages: Springer Book Archive