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Lee-side flow structures of very low aspect ratio cruciform wing–body configurations

Tuling, S.; Dala, L.; Toomer, C.

Authors

Sean Tuling Sean.Tuling@uwe.ac.uk
Senior Lecturer in Aerospace Engineering

L. Dala



Abstract

Anumerical and experimental investigation was performed to study the dominant flow structures in the lee side of a cruciform wing-body configuration at supersonic speeds in the + orientation. The wings or strakes are of very low aspect ratio of order 0.025 with taper ratio ̃1 with a length of 11.25D mounted on a 19D tangent ogive body. The numerical simulations were performed using Fluent with the Spalart-Allmaras turbulence model. The Mach numbers simulated were 2.0, 2.5, and 3.0 up to angles of attack of 25 deg. The simulations revealed that the flow at low angles resembles that of a body and a strake, with the dominant separated flow feature being the rolled up side-edge vortex sheet. For angles of attack =10 deg, the flow resembles that of a body only configuration with two symmetric vortices at the moderate angles instead of two body and two strake vortices because the body vortex coalesces with the strake vortex. Vortex shedding is initiated at crossflowMachnumbers greater than 0.55 where the coalesced body and strake vortex separates into two symmetric pairs of vortices. Copyright © 2012 by Charlotte Lücking. Published by the American Institute of Aeronautics and Astronautics, Inc.

Citation

Dala, L., Toomer, C., & Tuling, S. (2013). Lee-side flow structures of very low aspect ratio cruciform wing–body configurations. Journal of Spacecraft and Rockets, 50(6), 1134-1149. https://doi.org/10.2514/1.a32522

Journal Article Type Article
Online Publication Date Dec 24, 2013
Publication Date 2013
Deposit Date May 3, 2021
Journal Journal of Spacecraft and Rockets
Print ISSN 0022-4650
Electronic ISSN 1533-6794
Publisher American Institute of Aeronautics and Astronautics
Peer Reviewed Peer Reviewed
Volume 50
Issue 6
Pages 1134-1149
DOI https://doi.org/10.2514/1.a32522
Keywords Space and Planetary Science; Aerospace Engineering
Public URL https://uwe-repository.worktribe.com/output/7336878
Additional Information Received: 2012-10-10; Revised: 2012-11-16; Accepted: 2012-11-26; Published: 2013-12-24