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Reynolds-Stress Model Computations of the NASA Juncture Flow Experiment

Eisfeld, Bernhard and Togiti, Vamshi and Braun, Sebastian and Stürmer, Arne (2020) Reynolds-Stress Model Computations of the NASA Juncture Flow Experiment. AIAA. AIAA SciTech Forum and Exposition, 06-10 Jan 2020, Orlando, Florida, USA. DOI: 10.2514/6.2020-1306

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Numerical simulations of the NASA Juncture Flow Experiment are carried out, employing a Reynolds-stress model. A transformation of the length-scale determining variable is suggested for improving the numerical robustness of the model. Results obtained with different unstructured flow solvers show very good agreement, when using sufficiently fine grids. The influence of a recently developed length-scale correction and of prescribed transition is investigated. While the length-scale correction has only a minor effect, prescribing transition according to the experimental tripping position appears to be essential for predicting the suction peak on the wing near the junction with the fuselage. Moreover, accounting for transition consistently increases the predicted size of the separation bubble in the junction. Generally, fair agreement with the experimental data is achieved, where the scatter of predicted bubble sizes due to the variation of the model is of the order of the experimental uncertainty.

Item URL in elib:https://elib.dlr.de/133669/
Document Type:Conference or Workshop Item (Speech)
Title:Reynolds-Stress Model Computations of the NASA Juncture Flow Experiment
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Eisfeld, BernhardBernhard.Eisfeld (at) dlr.dehttps://orcid.org/0000-0002-1751-8872
Togiti, VamshiVamshi.Togiti (at) dlr.deUNSPECIFIED
Braun, SebastianSebastian.Braun (at) dlr.deUNSPECIFIED
Stürmer, ArneArne.Stuermer (at) dlr.dehttps://orcid.org/0000-0002-5647-1800
Date:January 2020
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.2514/6.2020-1306
Page Range:pp. 1-20
Keywords:Juncture Flow, Corner Flow, Separation, Turbulence, Reynolds-Stress Model, Length-Scale Correction
Event Title:AIAA SciTech Forum and Exposition
Event Location:Orlando, Florida, USA
Event Type:international Conference
Event Dates:06-10 Jan 2020
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 - VicToria
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, BS
Deposited By: Eisfeld, Dr.-Ing. Bernhard
Deposited On:05 Mar 2020 13:11
Last Modified:05 Mar 2020 13:11

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