elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Nonlinear aerodynamic damping in a highly loaded vibrating compressor cascade

Schuff, Matthias and Chenaux, Virginie (2019) Nonlinear aerodynamic damping in a highly loaded vibrating compressor cascade. In: Proceedings of ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. ASME Turbo Expo 2019, 15.-21. Juni 2019, Phoenix, AZ (USA). DOI: 10.1115/GT2019-91550

Full text not available from this repository.

Abstract

A numerical aeroelastic study of a 2D linear compressor cascade based on the non-rotating annular compressor cascade with a NACA3506 profile was performed using a one-way coupled technique (prescribed-motion approach). Subsonic and transonic flow conditions with strong shocks in the blade passage were imposed. Using a nonlinear harmonic balance solver, unsteady simulations were performed by enforcing one blade oscillation motion. For each blade structural mode, the blade deflection amplitude was varied and its influence on the blade aerodynamic response was determined in terms of aerodynamic damping. The blade modes investigated consisted of one pitching and two heaving oscillation motion. In transonic flows and for the three structural modes investigated, the cascade shows nonlinear aerodynamic responses depending on the vibration amplitude. The results presented in this work show that nonlinear frequency domain methods are able to capture the blade nonlinear aeroelastic behavior coming from amplitude-dependent aerodynamic responses.

Item URL in elib:https://elib.dlr.de/127751/
Document Type:Conference or Workshop Item (Speech)
Title:Nonlinear aerodynamic damping in a highly loaded vibrating compressor cascade
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schuff, MatthiasMatthias.Schuff (at) dlr.dehttps://orcid.org/0000-0003-3276-2539
Chenaux, VirginieVirginie.Chenaux (at) dlr.deUNSPECIFIED
Date:June 2019
Journal or Publication Title:Proceedings of ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition
Refereed publication:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.1115/GT2019-91550
Status:Published
Keywords:turbomachinery, compressor, aeroelasticity, vibration, damping, flutter, nonlinear, harmonic, balance
Event Title:ASME Turbo Expo 2019
Event Location:Phoenix, AZ (USA)
Event Type:international Conference
Event Dates:15.-21. Juni 2019
Organizer:ASME
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Experiments
Deposited By: Schuff, Matthias
Deposited On:24 Jun 2019 11:16
Last Modified:24 Jun 2019 11:16

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.