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Calculation of the Unsteady Transonic 2D Cascade Flow for Aeroelastic Applications.

Carstens, V. (1991) Calculation of the Unsteady Transonic 2D Cascade Flow for Aeroelastic Applications. In: DGLR-Bericht 91-06, 91-068, pp. 108-119. Int. Forum on Aeroelasticity and Structural Dynamics 1991 Combined with a One-Day Workshop on Smart Material Systems and Structures, June 3-6, 1991, Eurogress Center, Aachen..

Full text not available from this repository.

Abstract

The numerical results of a code for computing the unsteady transonic flow in a 2D cascade of harmonically oscillating blades are presented. The calculation of the flow field is based on an Euler code using flux vector splitting. After a description of the basic equations and the special numerical techniques applied in the code, results are presented for the first harmonics of pressure, lift and moment coefficients. For the present investigations two basic oscillation modes have been chosen: tuned modes where all blades perform oscillations with the same frequency, same amplitude and a constant interblade phase angle, and mistuned modes, where all blades are oscillating with the same amplitude, but with varying frequency from one blade to another. In the case of tuned bending modes, the computed results are compared with the experimental data from a standard configuration given by the IUTAM "Workshop on Aeroelasticity in Turbomachine Cascades". Special attention is directed to the occurence of aerodynamic instability in the oscillating cascade. The Mach numbers and interblade phase angles at which the above-mentioned experimental test case shows unstable behaviour are generally well-reproduced by the computational results.

Item URL in elib:https://elib.dlr.de/39445/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1991, pages=12,
Title:Calculation of the Unsteady Transonic 2D Cascade Flow for Aeroelastic Applications.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Carstens, V.UNSPECIFIEDUNSPECIFIED
Date:1991
Journal or Publication Title:DGLR-Bericht 91-06
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:91-068
Page Range:pp. 108-119
Status:Published
Keywords:Euler algorithm, flux vector splitting, unsteady transonic flow, unsteady cascade flow, interactive grid generation.
Event Title:Int. Forum on Aeroelasticity and Structural Dynamics 1991 Combined with a One-Day Workshop on Smart Material Systems and Structures, June 3-6, 1991, Eurogress Center, Aachen.
HGF - Research field:UNSPECIFIED
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:no assignment
DLR - Research theme (Project):UNSPECIFIED
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: DLR-Beauftragter, elib
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 10:43

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