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Grey Area Mitigation for Hybrid RANS-LES Methods

Objective

The aeronautical industry lacks confidence in the accuracy of computational fluid dynamics (CFD) in areas of highly non-linear, unsteady flows close to the flight envelope borders, which demands advanced approaches and methods. The family of Hybrid RANS-LES Methods (HRLM) is the best candidate for the next generation of CFD methods for increased fidelity at industrially-feasible expense. While HRLM have been proven to perform considerably better than conventional (U)RANS approaches in situations with strong or massive flow separation, they are hampered by the Grey Area issue once they have to deal with thin separation regions and where shear layer instabilities are weaker.
As exactly these areas are of high importance for aircraft performance (lift, loads) the acceptance of HRLM strongly depends on the ability to mitigate the extent of the Grey Area (GA). With the new/advanced Grey Area mitigation approaches, the Go4Hybrid project offers hybrid RANS-LES methods that improve predictive capability with increased flexibility and reduced user decision load. Hence, the incentive for future use of these highly sophisticated methods goes in line with a considerably high impact:
• Progress beyond the state-of-the-art for non-zonal methods is achieved by the development and demonstration of generally-applicable extensions to mitigate the Grey Area problem, thereby extending their applicability to important industrial flows at the performance frontiers.
• For embedded methods, a focus will be placed on improving methods so that they are applicable to arbitrary complex geometries, as opposed to many existing techniques that require e.g. canonical boundary layer assumptions or homogeneous flow directions and are hence fundamentally less flexible.
In general, development work will pursue a number of key goals contributing to extended applicability, improved accuracy, increased flexibility, reduced user decision load and increased Technology Readiness Level of hybrid approaches.

Call for proposal

FP7-AAT-2013-RTD-1
See other projects for this call

Funding Scheme

CP-FP - Small or medium-scale focused research project

Coordinator

CFD SOFTWARE - ENTWICKLUNGS- UND FORSCHUNGSGESELLSCHAFT MBH
Address
Wolzogenstrasse 4
14163 Berlin
Germany
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
EU contribution
€ 191 199,90
Administrative Contact
Frank Thiele (Prof.)

Participants (6)

NEW TECHNOLOGIES AND SERVICES LLC
Russia
EU contribution
€ 97 987
Address
Dobrolyubov Avenue 14
197198 Saint Petersburg
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Mikhail Strelets (Prof.)
DEUTSCHES ZENTRUM FUR LUFT - UND RAUMFAHRT EV
Germany
EU contribution
€ 140 685
Address
Linder Hohe
51147 Koln
Activity type
Research Organisations
Administrative Contact
Kathrin Althaus (Mrs.)
TOTALFORSVARETS FORSKNINGSINSTITUT
Sweden
EU contribution
€ 165 750
Address
Gullfossgatan 6
164 90 Stockholm
Activity type
Research Organisations
Administrative Contact
Shia-Hui Peng (Prof.)
STICHTING NATIONAAL LUCHT- EN RUIMTEVAARTLABORATORIUM
Netherlands
EU contribution
€ 142 500
Address
Anthony Fokkerweg 2
1059CM Amsterdam
Activity type
Research Organisations
Administrative Contact
Harmen Van Der Ven (Mr.)
OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES
France
EU contribution
€ 142 598,50
Address
Chemin De La Huniere
91120 Palaiseau
Activity type
Research Organisations
Administrative Contact
Jean-Loup Cocquerez (Mr.)
THE UNIVERSITY OF MANCHESTER
United Kingdom
EU contribution
€ 112 689,60
Address
Oxford Road
M13 9PL Manchester
Activity type
Higher or Secondary Education Establishments
Administrative Contact
Liz Fay (Mrs.)