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Large Eddy Simulation of a complete Harrier aircraft in ground effect

Published online by Cambridge University Press:  03 February 2016

G. J. Page  and
J. J. McGuirk
G. J. Page
Affiliation:
[email protected], Department of Aeronautical Engineering, Loughborough University, Loughborough, UK
J. J. McGuirk
Affiliation:
[email protected]
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Abstract

This paper aims to demonstrate the viability of using the large eddy simulation (LES) CFD methodology to model a representative, complete STOVL aircraft geometry at touch down. The flowfield beneath such a jet-borne vertical landing aircraft is inherently unsteady. Hence, it is argued in the present work that the LES technique is the most suitable tool to predict both the mean flow and unsteady fluctuations, and, with further development and validation testing, this approach could be a replacement, and certainly a complementary aid, to expensive rig programmes. The numerical method uses a compressible solver on a mixed element unstructured mesh. Examination of instantaneous flowfield predictions from these LES calculations indicate close similarity with many flow features identified from ground effect flow visualisations, which are well known to be difficult to model using RANS-based CFD. Whilst significant further work needs to be carried out, these calculations show that LES could be a practical tool to model, for example, Hot Gas Ingestion for the Joint Strike Fighter aircraft.

Type
Research Article
Information
The Aeronautical Journal , Volume 113 , Issue 1140: The International Powered Lift Conference 2008: A Special issue , February 2009 , pp. 99 - 106
Copyright
Copyright © Royal Aeronautical Society 2009 

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