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Aero-Structural Coupling Strategy for a Morphing Blade Cascade Study

Abate, Giada and Riemenschneider, Johannes and Hergt, Alexander Silvio (2022) Aero-Structural Coupling Strategy for a Morphing Blade Cascade Study. ASME Journal of Turbomachinery. American Society of Mechanical Engineers (ASME). doi: 10.1115/1.4053174. ISSN 0889-504X.

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Official URL: https://asmedigitalcollection.asme.org/turbomachinery/article/doi/10.1115/1.4053174/1129102/Aero-Structural-Coupling-Strategy-for-a-Morphing

Abstract

The coupling of aerodynamics and structural mechanics is an important step in the design process of aeronautical devices with morphing parts. In this paper, a 2D-3D coupling approach is developed to study a morphing blade cascade. Two shape memory alloy actuators are placed on the upper and lower sides of the blade to make possible the change in shape of the leading-edge. In the present work, a preliminary design study is conducted by considering a two-dimensional CFD analysis of an airfoil cascade coupled with a three-dimensional structural analysis of the whole 3D blade. A methodology is developed to match 2D and 3D meshes such that the aerodynamic loads can be easily transferred to the structural analysis. From there, the deformed blade geometry due to both aerodynamic loads and actuator work can be transferred back to the CFD solver, and the iterative aero-structural coupling loop can be repeated until convergence. The aero-structural coupling strategy developed in this work is also applied to a blade cascade study aiming to improve its performance by morphing the leading-edge of the blade. The results of this application show that by morphing the leading-edge blade of only few millimeters (less than 2 mm), it is possible to achieve a relevant performance improvement in terms of total pressure loss coefficient decrease of about 53%.

Item URL in elib:https://elib.dlr.de/147975/
Document Type:Article
Title:Aero-Structural Coupling Strategy for a Morphing Blade Cascade Study
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Abate, GiadaGiada.Abate (at) dlr.dehttps://orcid.org/0000-0002-4320-4447
Riemenschneider, JohannesJohannes.Riemenschneider (at) dlr.dehttps://orcid.org/0000-0001-5485-8326
Hergt, Alexander SilvioAlexander.Hergt (at) dlr.deUNSPECIFIED
Date:1 June 2022
Journal or Publication Title:ASME Journal of Turbomachinery
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.1115/1.4053174
Publisher:American Society of Mechanical Engineers (ASME)
ISSN:0889-504X
Status:Published
Keywords:fluid-structure interaction (FSI), computational fluid-dynamics (CFD), fan blades
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Clean Propulsion
DLR - Research area:Aeronautics
DLR - Program:L CP - Clean Propulsion
DLR - Research theme (Project):L - Advanced Materials and New Manufacturing Technologies
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Abate, Giada
Deposited On:10 Jan 2022 07:28
Last Modified:11 Jan 2023 15:20

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