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High-Fidelity Adjoint-based Aircraft Shape Optimization with Aeroelastic Trimming and Engine Coupling

Merle, Andrei and Ilic, Caslav and Abu-Zurayk, Mohammad and Häßy, Jannik and Becker, Richard-Gregor and Schulze, Matthias and Klimmek, Thomas (2019) High-Fidelity Adjoint-based Aircraft Shape Optimization with Aeroelastic Trimming and Engine Coupling. EUROGEN 2019, 2019-09-12 - 2019-09-14, Guimaraes, Portugal.

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A high-fidelity adjoint-based aerodynamic shape optimization process has been set up that engages the Reynolds-averaged Navier-Stokes solver TAU and couples with the finite element solver Nastran and the thermodynamic engine cycle analysis tool GTlab-Performance. A so-called CAD-ROM, which is a reduced order model representation of a parametric computer-aided design model, is used as shape parameterization. The process enables a gradient-based aeroelastic optimization of full aircraft configurations with powered engines. Therein, a trimming module ensures that each optimization iteration is feasible by imposing an equilibrium of forces and moments. The process is embedded within FlowSimulator, an environment dedicated to efficient multi-physics simulations on high-performance computing clusters. The shape sensitivities are consistently derived by coupling the discrete flow, mesh and structural adjoints and by accounting for a trim-correction of the objective functional. The optimization process has been demonstrated for a cruise range optimization of a generic transport aircraft model. The range can be increased by approximately five percent within the first six optimization iterations by adapting the wing shape defined by a 126-dimensional wing section Bspline parameterization.

Item URL in elib:https://elib.dlr.de/130699/
Document Type:Conference or Workshop Item (Speech)
Title:High-Fidelity Adjoint-based Aircraft Shape Optimization with Aeroelastic Trimming and Engine Coupling
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schulze, MatthiasUNSPECIFIEDhttps://orcid.org/0000-0001-7172-7723UNSPECIFIED
Klimmek, ThomasUNSPECIFIEDhttps://orcid.org/0000-0002-5573-7355UNSPECIFIED
Date:12 September 2019
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:adjoint, RANS, shape, optimization, aerodynamic, aeroelastic, engine, trimming
Event Title:EUROGEN 2019
Event Location:Guimaraes, Portugal
Event Type:international Conference
Event Start Date:12 September 2019
Event End Date:14 September 2019
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 - VicToria (old)
Location: Braunschweig , Göttingen , Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, BS
Institute of Propulsion Technology > Engine
Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Deposited By: Merle, Andrei
Deposited On:03 Dec 2019 14:09
Last Modified:24 Apr 2024 20:34

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