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Simplified Stability-Based Transition Transport Modeling for Unstructured Computational Fluid Dynamics

Francois, Daniela Gisele and Krumbein, Andreas and Krimmelbein, Normann and Grabe, Cornelia (2023) Simplified Stability-Based Transition Transport Modeling for Unstructured Computational Fluid Dynamics. Journal of Aircraft, pp. 1-12. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.C037163. ISSN 1533-3868.

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Official URL: https://arc.aiaa.org/doi/epdf/10.2514/1.C037163


Inspired by the gamma-Re_thetat model framework, a new gamma-based model was developed and implemented into an unstructured Reynolds-averaged Navier–Stokes (RANS) code. The new model applies a modified version of the gamma-transport equation of the gamma-Re_thetat model. This new implementation applies an alternative local formulation for the pressure-gradient parameter lambda_theta that allows the local assessment of the transition criterion within the boundary layer and, thereby, simplifies the model and increases the accuracy of the transition onset location. The resulting prediction approach is robust, user-friendly, and suitable for unstructured RANS solvers with high parallelization. To attain a wide application range of the prediction method, while keeping the simplicity of the approach, a physical path-independent transition criterion was adopted, which was calibrated based on linear stability theory results. The approach was successfully validated against experimental data for various relevant test cases. In addition, results were also compared with results obtained with the gamma-Re_thetat model and, for some cases, with the eN method, which showed a strong similarity in the predictions of the eN method and the new gamma model.

Item URL in elib:https://elib.dlr.de/196636/
Document Type:Article
Additional Information:eISSN 1533-3868
Title:Simplified Stability-Based Transition Transport Modeling for Unstructured Computational Fluid Dynamics
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Krumbein, AndreasUNSPECIFIEDhttps://orcid.org/0000-0002-2772-7328141472989
Krimmelbein, NormannUNSPECIFIEDhttps://orcid.org/0000-0003-3850-9729141472990
Date:5 July 2023
Journal or Publication Title:Journal of Aircraft
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1-12
EditorsEmailEditor's ORCID iDORCID Put Code
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Series Name:American Institute of Aeronautics and Astronautics (AIAA)
Keywords:laminar-tubulent transition prediction, transition transport model, DLR gamma model, DLR TAU Code, Menter SST turbulence model, RANS
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Digital Technologies
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, GO
Institute for Aerodynamics and Flow Technology > CASE, BS
Deposited By: Francois, Daniela Gisele
Deposited On:31 Aug 2023 08:54
Last Modified:31 Aug 2023 08:54

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