CFD aerodynamic models for separated flow on high aspect ratio flexible wings

Will J.R. Hewson, Dorian P. Jones, Ann L. Gaitonde, Etienne Coetzee

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

1 Citation (Scopus)

Abstract

In this paper the process of determining semi-empirical coefficients for three dynamic stall models is demonstrated using Computational Fluid Dynamics (CFD). Results of the models are then evaluated against two-dimensional Unsteady Reynolds Averaged Navier-Stokes (URANS) and it is seen that the models can capture unsteady aerodyanmic nonlinearities. This work is then extended to model separated flow and dynamic stall on a finite wing. In order to do this, a correction is applied to the Unsteady Lifting Line Theory (ULLT) using two-dimensional viscous data, which can be obtained either from two-dimensional URANS or a dynamic stall model. The ability to couple ULLT to a dynamic stall model allows for fast unsteady, three-dimensional and nonlinear load predictions, without relying on a vast URANS database. For this reason it is also possible to use the model within aeroelastic calculations.

Original languageEnglish
Title of host publicationAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Edition210049
ISBN (Print)9781624105326
DOIs
Publication statusPublished - 1 Jan 2018
EventAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA SciTech Forum - Gaylord Palms , Kissimmee, United States
Duration: 8 Jan 201812 Jan 2018

Conference

ConferenceAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA SciTech Forum
Abbreviated titleSciTech 2018
CountryUnited States
CityKissimmee
Period8/01/1812/01/18

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