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Aerodynamic Performance of a Transonic Turbine Guide Vane with Trailing Edge Coolant Ejection Part II: Numerical Approach

Michelassi, V. and Martelli, F. and Amecke, J. (1994) Aerodynamic Performance of a Transonic Turbine Guide Vane with Trailing Edge Coolant Ejection Part II: Numerical Approach. ASME TUBO EXPO - The Haag, The Netherlands, 13.-16.6.1994 (ASME Paper 94-GT-248).

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Abstract

The effect of coolant ejection from the trailing edge of a turbine blase is studied by means of numerical simulation codes. Two solvers based on explicit and implicit algorithmus with and without multigridding are used in connection with H, HOH and HC grid types. A simple procedure to model the coolant jet at the trailing edge of the blade is presented which does not require excessive grid refinement. The features of the different approaches are discussed in terms of isentropic Mach number distribution on the blade, base pressure and wake profiles at various and Mach numbers and coolant flow rates which match the experimental conditions. The coolant ejection effect on the shock pattern is discussed. The trailing edge ejection is found to have a marginal effect on the wake shape and on the measured and computed base pressures.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=1994,
Title:Aerodynamic Performance of a Transonic Turbine Guide Vane with Trailing Edge Coolant Ejection Part II: Numerical Approach
Authors:
AuthorsInstitution or Email of Authors
Michelassi, V.Università di Firenze, Dip. Energetica
Martelli, F.Università di Firenze, Dip. Energetica
Amecke, J.UNSPECIFIED
Date:1994
Status:Published
Keywords:Wake mixing process, transonic turbine inlet guide vanes, trailing edge coolant flow ejection
Event Title:ASME TUBO EXPO - The Haag, The Netherlands, 13.-16.6.1994 (ASME Paper 94-GT-248)
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L TT - Triebwerkstechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik > Institut für Experimentelle Strömungsmechanik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:07

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