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Investigation of the Impact of Unsteady Turbulence Effects on the Aeroelastic Analysis of a Low-Pressure Turbine Rotor Blade

Heners, Jan Philipp and Vogt, Damian M. and Frey, Christian and Ashcroft, Graham (2019) Investigation of the Impact of Unsteady Turbulence Effects on the Aeroelastic Analysis of a Low-Pressure Turbine Rotor Blade. ASME Journal of Turbomachinery, 141 (10). American Society of Mechanical Engineers (ASME). DOI: 10.1115/1.4043950 ISSN 0889-504X (Submitted)

Full text not available from this repository.

Official URL: https://doi.org/10.1115/1.4043950

Abstract

The impact of the unsteadiness in the considered turbulence quantities on the numerical prediction of the aeroelastic behavior of a low-pressure turbine (LPT) rotor blade is evaluated by means of a numerical study. In this context, one of the main object ives of this work is to compare different nonlinear harmonic balance (HB) approaches -- one neglecting and one considering the unsteadiness in the employed turbulence models -- with a conventional nonlinear solver of the unsteady Reynolds-averaged Navier–Stokes (URANS) equations in the time domain. In order to avoid unphysical oscillations in the turbulence quantities caused by the Gibbs phenomenon in the chosen HB approach, a filter method based on the Lanczos filter is developed. The developed filter method is applied in the course of the HB simulations considering the unsteadiness in the underlying turbulence model. Furthermore, the impact of its application on the solution of the flow field and on the unsteady surface pressure of the rotor blade, in particular, is discussed in the context of this work.

Item URL in elib:https://elib.dlr.de/132489/
Document Type:Article
Title:Investigation of the Impact of Unsteady Turbulence Effects on the Aeroelastic Analysis of a Low-Pressure Turbine Rotor Blade
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Heners, Jan Philippjanphilipp.heners (at) mtu.deUNSPECIFIED
Vogt, Damian M.damian.vogt (at) itsm.uni-stuttgart.deUNSPECIFIED
Frey, ChristianChristian.Frey (at) dlr.deUNSPECIFIED
Ashcroft, GrahamGraham.Ashcroft (at) dlr.deUNSPECIFIED
Date:September 2019
Journal or Publication Title:ASME Journal of Turbomachinery
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:141
DOI :10.1115/1.4043950
Publisher:American Society of Mechanical Engineers (ASME)
ISSN:0889-504X
Status:Submitted
Keywords:Blades, Filters, Pressure, Rotors, Simulation, Turbulence, Flow (Dynamics)
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 - Virtual Engine and Validation methods
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Numerical Methodes
Deposited By: Frey, Christian
Deposited On:09 Dec 2019 12:50
Last Modified:10 Dec 2019 13:55

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