Airfoil active flow control has been attempted in the past in order to increase the permissible loading of boundary layers in gas turbine components. The present paper presents a stator with active flow control for a high-speed compressor using a Coanda surface near the trailing edge in order to inhibit boundary layer separation. The design intent is to reduce the number of vanes while—in order to ensure a good matching with the downstream rotor—the flow turning angle is kept constant. In a first step, numerical simulations of a linear compressor cascade with circulation control are conducted. The Coanda surface is located behind an injection slot on the airfoil suction side. Small blowing rates lead to a gain in efficiency associated with a rise in static pressure. In a second step, this result is transferred to a four-stage high-speed research compressor, where the circulation control is applied in the first stator. The design method and the first results are based on steady numerical calculations. The analysis of these results shows performance benefits of the concept. For both the cascade and the research compressor, the pressure gain and efficiency are shown as a function of blowing rate and jet power ratio. The comparison is performed based on a dimensionless efficiency, which takes into account the change in power loss.
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e-mail: vorreiter@tfd.uni-hannover.de
e-mail: s.fischer@tu-braunschweig.de
e-mail: horst.saathoff@siemens.com
e-mail: r.radespiel@tu-braunschweig.de
e-mail: seume@tfd.uni-hannover.de
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March 2012
Research Papers
Numerical Investigations of the Efficiency of Circulation Control in a Compressor Stator
Arne Vorreiter,
Arne Vorreiter
Research Assistant
Mem. ASME
Institute of Turbomachinery and Fluid Dynamics,
e-mail: vorreiter@tfd.uni-hannover.de
Leibniz Universitaet Hannover
, 30167 Hannover, Germany
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Susanne Fischer,
Susanne Fischer
Research Assistant
Mem. ASME
Institute of Fluid Mechanics,
e-mail: s.fischer@tu-braunschweig.de
Technische Universitaet Braunschweig
, 38106 Braunschweig, Germany
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Horst Saathoff,
Horst Saathoff
Research Engineer
Mem. ASME
Siemens AG,
e-mail: horst.saathoff@siemens.com
Energy Sector
, 45473 Muelheim an der Ruhr, Germany
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Rolf Radespiel,
Rolf Radespiel
Professor
Senior Mem. ASME
Institute of Fluid Mechanics,
e-mail: r.radespiel@tu-braunschweig.de
Technische Universitaet Braunschweig
, 38106 Braunschweig, Germany
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Joerg R. Seume
Joerg R. Seume
Professor
Senior Mem. ASME
Institute of Turbomachinery and Fluid Dynamics,
e-mail: seume@tfd.uni-hannover.de
Leibniz Universitaet Hannover
, 30167 Hannover, Germany
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Arne Vorreiter
Research Assistant
Mem. ASME
Institute of Turbomachinery and Fluid Dynamics,
Leibniz Universitaet Hannover
, 30167 Hannover, Germanye-mail: vorreiter@tfd.uni-hannover.de
Susanne Fischer
Research Assistant
Mem. ASME
Institute of Fluid Mechanics,
Technische Universitaet Braunschweig
, 38106 Braunschweig, Germanye-mail: s.fischer@tu-braunschweig.de
Horst Saathoff
Research Engineer
Mem. ASME
Siemens AG,
Energy Sector
, 45473 Muelheim an der Ruhr, Germanye-mail: horst.saathoff@siemens.com
Rolf Radespiel
Professor
Senior Mem. ASME
Institute of Fluid Mechanics,
Technische Universitaet Braunschweig
, 38106 Braunschweig, Germanye-mail: r.radespiel@tu-braunschweig.de
Joerg R. Seume
Professor
Senior Mem. ASME
Institute of Turbomachinery and Fluid Dynamics,
Leibniz Universitaet Hannover
, 30167 Hannover, Germanye-mail: seume@tfd.uni-hannover.de
J. Turbomach. Mar 2012, 134(2): 021012 (11 pages)
Published Online: June 27, 2011
Article history
Received:
October 8, 2010
Revised:
November 12, 2010
Online:
June 27, 2011
Published:
June 27, 2011
Citation
Vorreiter, A., Fischer, S., Saathoff, H., Radespiel, R., and Seume, J. R. (June 27, 2011). "Numerical Investigations of the Efficiency of Circulation Control in a Compressor Stator." ASME. J. Turbomach. March 2012; 134(2): 021012. https://doi.org/10.1115/1.4003286
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