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ADVANCED ENDWALL CONTOURING FOR LOSS REDUCTION AND OUTFLOW HOMOGENIZATION FORAN OPTIMIZED COMPRESSOR CASCADE

Reutter, Oliver and Rozanski, Magdalena and Hergt, Alexander and Nicke, Eberhard (2015) ADVANCED ENDWALL CONTOURING FOR LOSS REDUCTION AND OUTFLOW HOMOGENIZATION FORAN OPTIMIZED COMPRESSOR CASCADE. 11th European Turbomachinery Conference, 23.-27.März 2015, Madrid, Spanien. ISSN 2410-4833

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Abstract

The following paper deals with the development of an optimized non-axisymmetric endwall contour for reducing the total pressure loss and for homogenizing the outflow of a highly loaded compressor cascade. In contrast to former studies using a NACA-65 K48 cascade airfoil this study starts with the design of a new high performance airfoil which is based on the aerodynamic boundary conditions of the NACA-65 K48 cascade. This new airfoil is then used as a basis. Optimizations of the airfoil and of the endwall contour are performed using the DLR in-house tool AutoOpti and the RANS-solver TRACE. Three operating points at an inflow Mach number of 0.67 with different inflow angles are used to secure a wide operating range of the optimized design. The optimized endwall contour changes the secondary flow in such a way, that the corner stall is reduced, which in turn significantly reduces the total pressure loss. The endwall contour in the outflow region leads to a considerable homogenization of the outflow in the near wall region. Using non-axisymmetric endwall shaping can give a contribution to enhancing axial vane rows with already highly efficient blading.

Item URL in elib:https://elib.dlr.de/96378/
Document Type:Conference or Workshop Item (Speech)
Title:ADVANCED ENDWALL CONTOURING FOR LOSS REDUCTION AND OUTFLOW HOMOGENIZATION FORAN OPTIMIZED COMPRESSOR CASCADE
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Reutter, Oliveroliver.reutter (at) dlr.deUNSPECIFIED
Rozanski, MagdalenaAT-FUVUNSPECIFIED
Hergt, Alexanderalexander.hergt (at) dlr.deUNSPECIFIED
Nicke, Eberhardeberhard.nicke (at) dlr.deUNSPECIFIED
Date:26 March 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
ISSN:2410-4833
Status:Published
Keywords:Compressor, Optimization, Endwall Contouring, Cascade
Event Title:11th European Turbomachinery Conference
Event Location:Madrid, Spanien
Event Type:international Conference
Event Dates:23.-27.März 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Fan and Compressor Technologies
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Fan and Compressor
Deposited By: Reutter, Oliver
Deposited On:10 Jun 2015 11:48
Last Modified:10 Jun 2015 11:48

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