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Application of an Intermittency-based Transition Transport Model to the NASA CRM-NLF Configuration

Krumbein, Andreas and Francois, Daniela Gisele and Krimmelbein, Normann (2021) Application of an Intermittency-based Transition Transport Model to the NASA CRM-NLF Configuration. In: 20. STAB-Workshop - Jahresbericht 2021, pp. 41-42. 20. STAB-Workshop 2021, 16.-17.11.2021, Göttingen, Deutschland.

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Official URL: https://www.dlr.de/as/Portaldata/5/Resources/dokumente/veranstaltungen/stab_workshop/STAB-Jahresbericht-2021.pdf

Abstract

For the numerical simulation of aircraft configurations with transitional boundary layers using computational fluid dynamics (CFD) tools it is reasobale to have different transition prediction approaches available. Depending on the complexity of the geometry and the flow field and on the specific simulation task it may be worthwhile to chose an approach that satisfies the needs of the user with regard to the scope of performance, the predictive accuracy, the ease of use and the pre- and post-processing efforts before and after the computation. In the DLR TAU code transition transport models (TTM) are available in addition to the traditional streamline-based application of the eN-method in conjunction with the two-N-factor strategy that relies on an appropriate NTS-NCF transition limiting curve. While the eN-method has a theoretical foundation and has turned out to be able to yield very accurate predictions it sometimes needs expert knowledge especially in complex flows cases. In contrast, transition transport models can be applied much more easily. However, in many cases they are based on more or stronger approximations. Thus, any new transport model must be validated carefully against experimental data and other prediction approaches that are less approximate.

Item URL in elib:https://elib.dlr.de/145808/
Document Type:Conference or Workshop Item (Speech)
Title:Application of an Intermittency-based Transition Transport Model to the NASA CRM-NLF Configuration
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Krumbein, AndreasAndreas.Krumbein (at) dlr.dehttps://orcid.org/0000-0002-2772-7328
Francois, Daniela GiseleDaniela.Francois (at) dlr.deUNSPECIFIED
Krimmelbein, Normannnormann.krimmelbein (at) dlr.deUNSPECIFIED
Date:17 November 2021
Journal or Publication Title:20. STAB-Workshop - Jahresbericht 2021
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 41-42
Editors:
EditorsEmailEditor's ORCID iD
UNSPECIFIEDSTABUNSPECIFIED
Series Name:Jahresbericht
Status:Published
Keywords:CRM-NLF, transition transport model, gamma(CAS) model, intermittency
Event Title:20. STAB-Workshop 2021
Event Location:Göttingen, Deutschland
Event Type:Workshop
Event Dates:16.-17.11.2021
Organizer:DLR, STAB
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 - Virtual Aircraft 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: Krumbein, Dr.-Ing. Andreas
Deposited On:05 Jan 2022 09:16
Last Modified:22 Feb 2022 18:23

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