The Influence of Computational Mesh on the Prediction of Vortex Interactions about a Generic Missile Airframe

Shaw, S. et al. (2021) The Influence of Computational Mesh on the Prediction of Vortex Interactions about a Generic Missile Airframe. In: AIAA SciTech 2022 Forum, San Diego, CA. USA, 03-07 Jan 2022, ISBN 9781624106316 (doi: 10.2514/6.2022-1176)

Abstract

A research program has been underway for four years to study vortex interaction aerodynamics that are relevant to military air vehicle performance. The program has been conducted under the auspices of the NATO Science and Technology Organization (STO), Applied Vehicle Technology (AVT) panel by a Task Group with the identification of AVT-316. The Missile Facet of this group has concentrated their work on the vortical flow field around a generic missile airframe and its prediction via computational methods. This paper focuses on mesh-related effects and RANS simulations. Simulated vortex characteristics were found to depend strongly on the properties of the employed mesh, in terms of both resolution and topology. Predictions of missile aerodynamic coefficients show a great dependence on mesh properties as they are sensitive to computed vortex dynamics. Key suggestions about the desired mesh characteristics have been made. Based on these, a shared mesh was constructed to perform common analyses between the AVT-316 Missile Facet members. Mesh based uncertainties of the aerodynamic coefficient predictions were estimated via Richardson Extrapolation method.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Barakos, Professor George and Boychev, Kiril
• Authors: Shaw, S., Baran, O. U., Toomer, C., Boychev, K., Barakos, G.N., Louppy, G., De Spirito, J., Anderson, M., Tormalm, M. H., Schnepf, C., and Dikbas, E.
• College/School: College of Science and Engineering > School of Engineering
• ISBN: 9781624106316
• Copyright Holders: Copyright © 2022 by The Scientific and Technological Research Council of Turkey - Defense Industries Research and Development Institute (TÜBİTAK SAGE)
• First Published: First published in AIAA SCITECH 2022 Forum
• Publisher Policy: Reproduced in accordance with the publisher copyright policy