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Characterisation of wall flow topology in jet-in-crossflow interaction

Published online by Cambridge University Press:  04 July 2016

E. Y. Kwon  and
D. Chocinski
E. Y. Kwon
Affiliation:
Institute for Advanced Engineering, Korea
D. Chocinski
Affiliation:
Saft-Alcatel, France
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Abstract

The topological structure of an underexpanded Mach 2·5 jet injected into a Mach 0·75 crossflow are studied experimentally and numerically. The structure of the skin friction pattern is examined in detail by localising precisely the topological singularities. Oil-flow visualisations reveal the complex nature of the wall flow and its strong three-dimensionality. Four vortical structures appear in the vicinity of the wall, where two are essentially parallel to the wall (horseshoe vortex and boundary-layer vortices) and the other two are directed perpendicular to the wall (wake vortices). Comparison of computation with experiment shows good agreement for the complex separated-flow surface shear pattern and the pressure distribution. The crossflow Mach number plays an important role in the separation mechanisms. Significant differences in the topology occur with a Mach 0·3 crossflow whereas above Mach 0·6 the mean structure of the interaction is almost conserved, except that the secondary wake vortices disappear.

Type
Research Article
Information
The Aeronautical Journal , Volume 106 , Issue 1061 , July 2002 , pp. 393 - 398
Copyright
Copyright © Royal Aeronautical Society 2002 

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References

1. Manela, J. and Seigner, A. Interaction of multiple supersonic jets with a transonic flowfield, March 1986, AIM J, 24, (3), pp 418–423.Google Scholar
2. Dormieux, M. and Marsaa-Poey, R. Numerical assessment of aerodynamic interactions on missiles with transverse jets control.11, AGARD-CP-534,1993, pp 30.1-30.11.Google Scholar
3. Endmann, P,Hennig, P,and Nikolitsch, D. Aerodynamische wirkungen von querschubströmungen an flugkörpern übersichtsbericht, DASA-Beright Nr.TN-VAS 41-94-0005,1994.Google Scholar
4. Margason, R. J. Fifty years of jet in cross flow research, , AGARD- CP-534, 1993,pp 1.1-1.41.Google Scholar
5. Jacquin, L. Phenomenological description and simplified modeling of vortex wake issuing from a jet in a cross flow, La Recherche Aerospatiale, (2), 1994, pp 117-133.Google Scholar
6. Chocinski, D, Leblanc, R. and Garem, J.-H. Jet supersonique de paroi en écoulements transsoniques et subsoniques, Final Report, DRET Contract 96/2508A, 1997.Google Scholar
7. Kwon, E. Y, Chocinski, D. and Leblanc, R. Jet plume characteristics of supersonic Jet in compressible crossflow, to be published in Aeronaut J. Google Scholar
8. Dutoya, D. and Courbet, B. Notice d'utilisation du code Mathilda (version 1.1), Technical Report, ONERA 26/3446 EN, 1995.Google Scholar
9. Tobak, M. and Peak, D. J. Topology of three-dimensional separated flows, Ann.Rev.Fluid Mech, 14,1982, pp 61–85.Google Scholar
10. Hunt, J.C. Abell, C. J, Peterka, J.A. and Woo, H. Kinematical studies of the flow around free or surface-mounted obstacles; Applying Topology to Flow Visualisation, J Fluid Mech, pp 179–200, 86, Part 1, 1978.Google Scholar
11. Foss, J.F. Interaction region phenomena for the jet in cross-flow problem, Universitat Karlsruhe, Sonderforschungsbereich (SFB), Report 80/E/161,1980.Google Scholar
12. Perry, A.E, Kelso, R.M. and Lim, T.T. Topological structure of a jet in a crossflow, AGARD-CP-534, 1993, pp 12.1-12.12.Google Scholar
13. Chapman, G.T. and Yates, L.A. Topology of flow separation on three- dimensional bodies, Appl. Mech. Rev, 44, (7), 1991.Google Scholar
14. Brons, M. Private communication, CEAT, Poitiers, 1997.Google Scholar
15. Krothapalli, A, Lourenco, L. and Buchlin, J.M. Separated flow upstream of a jet in a crossflow, AIAA J, 28, (3), 1990.Google Scholar
16. Kwon, E.Y. Jet supersonique en ecoulement transversal transsonique: vorticite du panache et topologie de l'ecoulement parietal, DEA Report, CEAT-LEA, University of Poitiers, 1995.Google Scholar