CORDIS - Resultados de investigaciones de la UE

Advances in Numerical and Analytical tools for DEtached flow prediction

Final Report Summary - ANADE (Advances in Numerical and Analytical tools for DEtached flow prediction)


Final Report: 1 January 2012 - 31 December 2015

ANADE: Advances in Numerical and Analytical tools for DEtached flow prediction

Grant agreement: PITN-GA-289428 Scientific Coordinator: Dr Eusebio Valero, UPM, Spain

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Summary and description of the project objectives

ANADE Network integrates 10 diverse partners that include 4 universities, 3 research centers and 2 big companies, Airbus-SP and Airbus-UK, the major European aircraft manufacturer. ANADE participants are distributed across 5 European countries and further supported by one associated partner in USA.

During the 4-year duration of the project a total of 14 fellows in the early stage of their career and 3 experienced researchers are receiving training in all areas encompassing the prediction of detached flows.

The scientific topics of the project focus on the prediction and control of highly detached massively separated flows, including aeroacoustic prediction and its propagation. A contribution to a better understanding of the underlying physics and the advancement of new numerical methods better suited for these flows is expected as a scientific outcome of the project.

ANADE tackles flow separation flow phenomena by means of four research lines distributed in distinct but complementary and interacting work packages:

• WP1: Efficient numerical methods for highly detached flows
• WP2: Receptivity and sensitivity analyses. Uncertainties and mesh adaptation algorithms
• WP3: Computational Aeroacoustics
• WP4: Investigation of separated flows by instability analysis

The main technical objectives include:

• General advances in numerical methods and underlying physics aimed at obtaining a better understand of detached flow and prediction of acoustic fields
• Training of high profiled individuals
• Specialist exchange between the networks team and contribution of expert from outside and inside the network.
• General progress of communication between industry and academia. Transfer of knowledge and tools from academia to industry and improved capability of the academia to a better perception of industrial problems.
• Joint publications and dissemination of results.

ANADE has provided significant advances in: h/p adaptation strategies based on truncation error or adjoint methodology and capable to manage strong discontinuities, one of the main limitations of High Order (HO) methods. New generation of meshes, specifically adapted to complex geometries and curved boundaries. Implementation of the first prototype industrial HO solver, taking advantages of the immense capabilities in software development of NUMECA, or application of HO methods of aeroacoustics propagation. Stability analysis has been update to complex geometries and turbulence models, which provide valuable information of detached flows at high Reynolds and high angles of attack. As an additional extension, the mathematical formulation of the sensitivity of the flow under external perturbation has been posed and preliminary results have been obtained. This allows completing the optimization loops where the target is no longer lift or draft but a physical feature.

The final results of the project have been included in a total of 32 international publications in peer reviewed journals, including Physic of Fluids, Journal of Fluids Mechanics, International Journal of Numerical Methods in Fluids or AIAA; proceeding in well-known international forums such as AIAA or ISMA, or book chapters such as the LS 2014-05, Von Karman Institute for Fluid Dynamics or the Springer Tracts in Mechanical Engineering.

Additionally, as main events, the project organized the one-week Lecture Series on “Progress in Flow Instability Analysis and Laminar-Turbulent Transition Modeling ” with more than 50 attendees and the International Workshop on Numerical Prediction of Detached Flows, held at ETSIA-UPM Madrid, October 2013.

The ANADE has produced highly qualified individuals and new initiatives and synergies that will enhance high-profile research between European countries, 12 out of 14 fellows will obtain their PhD diploma as results of their work in ANADE, contributing to enhance the European Research level in aeronautics and to establish of an enlarged partnership amongst universities, research centers and industry.

In addition, industry has acquired from this consortium awareness of new potential technologies, as well as new capabilities to be implemented within the design process. These new methods impact the analysis of flow separation (by introducing new techniques that provide insight about the stability of a given design), noise generation (early simulation capabilities based on current technologies in use), novel simulation techniques (which will reduce the design loop cost by reduction of resources needed to perform the same simulation) and solution quality increase (by improving the mesh generation quality assessment).

Finally, better understanding of the fundamental processes and physics associated with detached flows facilitates the development of technological innovations, which will enhance the performances of an aircrafts and will reduce its environmental impact, reducing carbon dioxide, noise and other pollution emissions.