Computational Modelling of Wing Downwash Profile with Reynolds-Averaged and Delayed Detached-Eddy Simulations

Tan, K.J. B., Wang, P. C. and Srigrarom, S. (2017) Computational Modelling of Wing Downwash Profile with Reynolds-Averaged and Delayed Detached-Eddy Simulations. In: 23rd AIAA Computational Fluid Dynamics Conference, Denver, CO, USA, 05-09 Jun 2017, ISBN 9781624105067 (doi: 10.2514/6.2017-3960)

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Abstract

This paper describes the computational model to predict downwash for a conventional fixed wing configuration at flight scales (ReMAC = 2.26 × 107 ). The lack of resolution in the downwash wake region resulted in an over-dissipation of the turbulent behaviour of airflow in the wing’s wake. This artificially inflates the effectiveness of the horizontal stabilizer where an over-prediction of pitch stiffness was observed. To resolve this over-dissipation, both the Reynolds-Averaged and Delayed Detached-Eddy Simulation methodology were adopted to accurately capture the downwash profile leaving the wing. Comparisons between the estimation of wall shear stresses and viscous wall unit against a ‘first-cut’ simulation are made and discussed. Fundamental features of the downwash profile including the spatial and temporal scales used for the mesh are also presented and detailed in this paper.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Srigrarom, Dr Spot and Wang, Mr Peng Cheng and Tan, Benjamin
Authors: Tan, K.J. B., Wang, P. C., and Srigrarom, S.
College/School:College of Science and Engineering > School of Engineering
Publisher:American Institute of Aeronautics and Astronautics
ISBN:9781624105067
Copyright Holders:Copyright © 2017 American Institute of Aeronautics and Astronautics, Inc.
First Published:First published in 23rd AIAA Computational Fluid Dynamics Conference: 2017-3960
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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