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A LOW SPEED COMPRESSOR TEST RIG FOR FLUTTER INVESTIGATIONS

Malzacher, L. and Geist, S. and Motta, Valentina and Peitsch, Dieter and Hennings, Holger (2018) A LOW SPEED COMPRESSOR TEST RIG FOR FLUTTER INVESTIGATIONS. ASME Journal of Turbomachinery. American Society of Mechanical Engineers (ASME). DOI: 10.1115/1.4041817 ISSN 0889-504X

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Abstract

A test facility for aeroelastic investigations has been set up at the chair of Aero Engines at the Technische Universitat Berlin. The test rig provides data for tool and code validation and is used for basic aeroelastic experiments. It is a low speed wind tunnel which allows free and controlled flutter testing. The test section contains a linear cascade with eleven compressor blades. Nine of them are elastically suspended. The paper presents a detailed description of the test facility, results to evaluate the overall flow quality along side an aeroelastic model to predict the flutter velocity and critical interblade phase angles. Furthermore, chordwise pressure distributions, measured with traveling wave mode experimental tests, are presented. These measurements have been carried out for a wide ranges of interblade phase angles and have been compared to numerical results. Hotwire anemometry has been applied to examine the inlet flow for several Mach- and Reynolds numbers. The results show small turbulence intensities. The blade surface pressure Distribution and the flow field of the blade’s suction and pressure side has been obtained by oil flow visualization.

Item URL in elib:https://elib.dlr.de/122468/
Document Type:Article
Title:A LOW SPEED COMPRESSOR TEST RIG FOR FLUTTER INVESTIGATIONS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Malzacher, L.TU BerlinUNSPECIFIED
Geist, S.TU BerlinUNSPECIFIED
Motta, ValentinaTU BerlinUNSPECIFIED
Peitsch, DieterTU Berlin / Dieter.Peitsch (at) ilr.tu-berlin.deUNSPECIFIED
Hennings, Holgerholger.hennings (at) dlr.deUNSPECIFIED
Date:2018
Journal or Publication Title:ASME Journal of Turbomachinery
Refereed publication:Yes
Open Access:No
In DOAJ:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1115/1.4041817
Publisher:American Society of Mechanical Engineers (ASME)
ISSN:0889-504X
Status:Published
Keywords:test rig, flutter investigation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aerolastic Simulation
Deposited By: Varela, Marie
Deposited On:10 Jan 2019 10:25
Last Modified:15 Jan 2019 14:00

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