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Management and Minimization of Errors and Uncertainties in Numerical Aerodynamics – The MUNA Project.

Eisfeld, Bernhard (2012) Management and Minimization of Errors and Uncertainties in Numerical Aerodynamics – The MUNA Project. ASME Turbo Expo 2012, 11-15 Jun 2012, Copenhagen.

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Kurzfassung

Selected results of the German national joint project MUNA – Management and Minimization of Uncertainties and Errors in Numerical Aerodynamics - are presented. From January 2007 to March 2010 altogether 12 partners from research and industry have been developing and applying methods and tools indicating and reducing inaccuracies in numerical flow simulations associated with the turbulence model, numerical methods, geometry and deformation and the numerical grid. Sensors have been developed, indicating errors and limits of the validity of RANS turbulence models. Numerical methods have been developed, reducing the discretization error and providing stochastic information on the solution, including shape optimization under geometrical uncertainties. Uncertainties associated with the structural model, the interpolation algorithm as well as the required grid deformation within coupled fluid/structure simulations have been investigated, leading to more reliable tools. A dissipation based sensor for insufficiently resolved grid regions, an improved grid adaptation based e. g. on adjoint information and an a posteriori grid manipulation tool have been developed, all reducing the influence of the computational grid on the predictions. Currently the project is extended, focussing on stochastic methods for quantification of stochastic uncertainties associated with the flow conditions and the geometry.

Dokumentart:Konferenzbeitrag (Vorlesung)
Titel:Management and Minimization of Errors and Uncertainties in Numerical Aerodynamics – The MUNA Project.
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Eisfeld, BernhardNICHT SPEZIFIZIERT
Datum:11 Juni 2012
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Uncertainties, Aerodynamics, Simulation
Veranstaltungstitel:ASME Turbo Expo 2012
Veranstaltungsort:Copenhagen
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:11-15 Jun 2012
Veranstalter :ASME
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Simulation & Validierung
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Hinterlegt von: Dr.-Ing. Bernhard Eisfeld
Hinterlegt am:02 Nov 2012 14:42
Letzte Änderung:08 Jan 2013 11:43

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