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An interferometric study of the shock interaction at a compression corner

  • L. C. Squire (a1), P. J. Bryanston-Cross (a1) and X. Liu (a1)

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This paper presents the results of an interferometric study of the shock/boundary-layer interaction at a compression corner. The boundary layer upstream of the corner is a non-equilibrium state having been disturbed by injection through a porous surface. As well as being relevant to the design of transpiration-cooled surfaces, the results show many similarities to the interaction in an adverse pressure gradient. The changes in the nature of the interaction as the approaching profile is distorted is fully explored and the results should provide a useful test case for computational fluid mechanics. The results are also used to evaluate the accuracy of interferometric techniques.

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1. Squire, L. C. and Smith, M. J. Interaction of a shock wave with a boundary layer disturbed by injection. Aeronaut Q, 1980, 31, pp 85112.
2. Hayakawa, K. and Squire, L. C. The effect of the upstream boundary layer state on the shock interaction at a compression corner. J Fluid Mech, 1982, 122, pp 369394.
3. Bryanston-Cross, P. J. High speed flow visualization. Prog Aerosp Sci, 1986, 23, pp 85104.
4. Parker, R. J. Practical developments in holographic interferometry, Aeronaut J, 1990, 94, pp 9198.
5. Havener, A. G. and Radley, R. J. Turbulent boundary layer flow separation measurements using holographic interferometry. AIAA Paper No 73-664, 1973.
6. Vest, C. M. Holographic interferometry. John Wiley and Sons, New York/Chichester/Brisbane/Toronto, 1979.
7. Bryanston-Cross, P. J., Judge, T. and Towers, D. P. Analysis of holographic fringe data using a dual reference approach. Presented at the SPIE Optical and Optoelectronic Applies Science and Engineering Conference, August 1989. San Diego.
8. Bryanston-Cross, P. J. and Epstein, A. The application of sub-micron particle visualisation for Particle Image Velocimetry at transonic speeds. To be published in Prog Aerosp Sci.
9. Holmes, S. C. and Squire, L. C. A numerical study of supersonic flow over a compression corner with different incoming boundary layer profiles. AIAA paper-90-1453, 1990.

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An interferometric study of the shock interaction at a compression corner

  • L. C. Squire (a1), P. J. Bryanston-Cross (a1) and X. Liu (a1)

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