Multidisciplinary Adjoint-based Optimizations in the MADELEINE Project: Overview and Main Results

Abstract

This paper provides an overview of the European MADELEINE (Multidisciplinary ADjoint-based Enablers for LargE-scale Industrial desigN in aEronautics) project dedicated to multi-disciplinary adjoint-based optimization in an industrial framework. MADELEINE aims at increasing the technology readiness level (TRL) and demonstrating the benefits of high-fidelity (HiFi), adjoint-based multidisciplinary optimization (MDO) to address the objectives of industry in terms of competitiveness and climate impact. The project is decomposed into two main subparts. The first one focuses on improvements of capability, efficiency and usability of adjoint-based MDO processes used in the European aeronautical industry. The second one aims at applying these methods and tools on representative test cases defined by the industrial partners. In this context, aero-structure, aero-acoustics and aerothermal problems are considered in order to optimize aircraft and engine components (wing, propeller, fan or turbine). The paper presents the overall structure of the project and the main results obtained after 3 years of collaboration.disciplinary experts and a new insight for design space exploration and the definition of better multi-disciplinary compromises.To reach this ambitious objective, the concept applied in MADELEINE focuses on synergies between enablers and demonstrators. Enablers are methods and tools that are requested to apply adjoint-based MDO approach; demonstrators are the applications of the final MDO processes on test cases representative of multi-physics industrial design problems. A. DemonstratorsIn MADELEINE, 5 relevant industrial Test Cases (TC) have been identified. TC1 and TC5 are of interest for aircraft manufacturers, TC2 to TC5 for engine manufacturers. These TCs are conducted using tools and disciplinary solvers used daily within the companies involved in the project. They are carried out by industrial partners themselves or by partners that have access to tools developed within the industrial framework. The rationale behind the TC selection is described hereafter.

Extension of the Exergy Balance to Rotating Frames of Reference : Application to a Propeller Configuration

“…It corresponds to a 3blade propeller in an external flow field with a spinner and a cylinder extending downstream up to the limit of the computational domain. It was designed at ONERA within the European project MADELEINE [11] as a reference case for aerodynamics/aeroacoustics investigations. The blade geometry was designed and studied previously at ONERA [12] [13] to evaluate body-force models.…”

Exergy Balance Extension to Rotating Reference Frames: Application to a Propeller Configuration

“…It corresponds to a 3-blade propeller in an external flow field with a spinner and a fixed cylinder extending downstream up to the limit of the computational domain. It was studied at ONERA within the European project MADELEINE [23] as a reference case for aerodynamics/aeroacoustics investigations. The blade geometry was designed and studied previously at ONERA [24] [25] to evaluate body-force models.…”