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Streamline-Based Transition Prediction Techniques in an Unstructured Computational Fluid Dynamics Code

Krumbein, Andreas and Krimmelbein, Normann and Grabe, Cornelia (2017) Streamline-Based Transition Prediction Techniques in an Unstructured Computational Fluid Dynamics Code. AIAA Journal. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.J054990 ISSN 0001-1452

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Official URL: https://arc.aiaa.org/doi/abs/10.2514/1.J054990

Abstract

An unstructured flow solver has been equipped with transition prediction techniques based on different streamline-based approaches, applying the eN method for the estimation of the points of transition onset. The integration paths for the N-factor integration can be approximated using lines parallel to the direction of the oncoming flow for some configurations. If arbitrary three-dimensional geometries are to be computed, the local flow direction can be taken into account. The calculation of the laminar boundary-layer data can either be carried out applying a suitable laminar boundary-layer method or by direct determination from the field solution of the unstructured computational fluid dynamics code. The development and characteristics of the two streamline-based transition prediction techniques, their elements, and properties are described. The focus is put on the latest achievements in the development activities of the two approaches and on their application to various configurations, most of them of industrial relevance. In addition, the specific advantages and shortcomings of the different approaches are discussed. Eventually, a number of challenges for the future development and extension of the transition prediction techniques against the background of a multidisciplinary simulation environment and for the application of computational fluid dynamics solvers to cruise and high-lift aircraft configurations are specified.

Item URL in elib:https://elib.dlr.de/112486/
Document Type:Article
Additional Information:AIAA Journal (Vol. 55, No. 5, May 2017, pp. 1548-1564)
Title:Streamline-Based Transition Prediction Techniques in an Unstructured Computational Fluid Dynamics Code
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Krumbein, AndreasAndreas.Krumbein (at) dlr.dehttps://orcid.org/0000-0002-2772-7328
Krimmelbein, Normannnormann.krimmelbein (at) dlr.deUNSPECIFIED
Grabe, Corneliacornelia.grabe (at) dlr.deUNSPECIFIED
Date:2017
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.2514/1.J054990
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0001-1452
Status:Published
Keywords:physikalische Modellierung, Transitionsmodellierung, Simulation, Transitionsvorhersage, eN-Methode, komplette Flug-Enveloppe, virtuelles Produkt, virtuelles Flugzeug, CFD, RANS-Löser, DLR TAU-Code, Stromlinien, unstrukturiert, Validierung, komplexe Konfiguration, A320, lineare Stabilitätstheorie, Transitionskriterien, 2-N-Faktor-Methode, Integrationspfade, Hubschrauber, NASA TRAP wing, 6:1 prolate spheroid, A310 3-Elementprofil
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, GO
Institute for Aerodynamics and Flow Technology > CASE, BS
Deposited By: Bachmann, Barbara
Deposited On:26 Jun 2017 16:06
Last Modified:08 Mar 2018 18:42

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