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)
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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/ | |||||||||||||||
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Document Type: | Article | |||||||||||||||
Title: | Investigation of the Impact of Unsteady Turbulence Effects on the Aeroelastic Analysis of a Low-Pressure Turbine Rotor Blade | |||||||||||||||
Authors: |
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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 (old) | |||||||||||||||
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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