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Validation of CFD-based transition transport models to predict laminar-turbulent transition of swept transport aircraft wings

Helm, Sebastian und Francois, Daniela Gisele und Krumbein, Andreas (2023) Validation of CFD-based transition transport models to predict laminar-turbulent transition of swept transport aircraft wings. In: 21. STAB-Workshop - Jahresbericht 2023, Seiten 142-143. 21. STAB - Workshop 2023, 2023-11-07 - 2023-11-08, Göttingen, Deutschland.

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Offizielle URL: https://www.dlr.de/as/Portaldata/5/Resources/dokumente/veranstaltungen/stab_workshop/Jahresbericht2023.pdf

Kurzfassung

Reducing the viscous drag of future commercial aircraft by means of laminar flow plays a key role in the transformation to climate-neutral aviation. To mitigate financial risks and to accelerate the design process of laminar aircraft, increasing use is being made of numerical methods, such as CFD. The applicability of CFD methods for the design process depends on a high degree of automation of the individual components and on the accuracy and reliability of the simulation results. In this respect, the design of laminar aircraft is particularly demanding for the CFD process. Streamline-based methods, based on linear local stability theory (LST) and the eN method or, more rarely, based on the non-local Parabolized Stability Equations (PSE) [2] offer a high degree of maturity and are therefore considered state-of-the-art. Although, these models have shown to be accurate and reliable, they require expert knowledge and automation is limited. At the same time, a new class of models for predicting laminar-turbulent transition is gaining attention. Transport equation transition models are based on information available locally (at the CFD node level), making them particularly well suited for automation and parallelization of 3D simulations with modern unstructured CFD codes. Despite the advantages these correlation-based transition models, the accuracy, robustness, and reliability of the models need to be ensured and demonstrated more extensively. This work contributed to the continuous development and validation of transition transport models, in particular the DLR γ-CAS model. The presentation will demonstrate the capabilities of the model to predict three-dimensional and transonic cases at high Reynolds number, compared to wind tunnel data. Furthermore, the inclusion of the effect of surface roughness into the model is discussed.

elib-URL des Eintrags:https://elib.dlr.de/199040/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Validation of CFD-based transition transport models to predict laminar-turbulent transition of swept transport aircraft wings
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Helm, SebastianSebastian.Helm (at) dlr.dehttps://orcid.org/0000-0001-5483-0884148239349
Francois, Daniela GiseleDaniela.Francois (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Krumbein, AndreasAndreas.Krumbein (at) dlr.dehttps://orcid.org/0000-0002-2772-7328148239351
Datum:7 November 2023
Erschienen in:21. STAB-Workshop - Jahresbericht 2023
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Seitenbereich:Seiten 142-143
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der HerausgeberHerausgeber-ORCID-iDORCID Put Code
NICHT SPEZIFIZIERTSTABNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Name der Reihe:Jahresbericht
Status:veröffentlicht
Stichwörter:RANS simulation, laminar-turbulent transition prediction, crossflow transition
Veranstaltungstitel:21. STAB - Workshop 2023
Veranstaltungsort:Göttingen, Deutschland
Veranstaltungsart:Workshop
Veranstaltungsbeginn:7 November 2023
Veranstaltungsende:8 November 2023
Veranstalter :DLR, STAB
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Effizientes Luftfahrzeug
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L EV - Effizientes Luftfahrzeug
DLR - Teilgebiet (Projekt, Vorhaben):L - Virtuelles Flugzeug und Validierung
Standort: Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > CASE, GO
Hinterlegt von: Helm, Sebastian
Hinterlegt am:07 Dez 2023 09:06
Letzte Änderung:24 Apr 2024 20:59

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