Evaluation of Various Turbulence Models for Prediction of Wing-Body Juncture Flow

Bryce Thomas, Ramesh K. Agarwal

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The NASA juncture flow experiments were designed for the purpose of evaluating and improving the ability of computational fluid dynamics (CFD) simulations to predict the juncture region flow field of a wing-body configuration. The wind tunnel experiments provide critical information for testing the accuracy of various turbulence models in simulating the complex flow separation that occurs at the trailing edge of the juncture region. The purpose of this paper is to build on the previous CFD research in the literature on juncture region flow with a focus on implementation of a structured hexahedral mesh with lower computing requirements and implementing several turbulence models, in particular the newly developed one-equation Wray- Agarwal (WA) model. The results from the one equation Spalart-Allmaras (SA) and Wray-Agarwal (WA) turbulence models as well as the two-equation k-ω SST (Shear Stress Transport) model are compared with the experimental data. Computations are performed and compared for four angles of attack of -2.5, 0, 5 and 7.5 degree. The prediction of pressure coefficient at various span-wise locations of the wing and the separation bubble near the trailing edge of the juncture demonstrate the ability of the Wray-Agarwal model in accurately computing the wing-body juncture flow field. This is reinforced by prediction of velocity profiles and turbulent shear stress upstream of the fuselage and near the separation region of the wing.

Original languageEnglish
Title of host publicationAIAA AVIATION 2022 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624106354
StatePublished - 2022
EventAIAA AVIATION 2022 Forum - Chicago, United States
Duration: Jun 27 2022Jul 1 2022

Publication series

NameAIAA AVIATION 2022 Forum


ConferenceAIAA AVIATION 2022 Forum
Country/TerritoryUnited States


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