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Review of Scientific Instruments : Measurement of shock wave unste...

By: D. Estruch, N. J. Lawson, D. G. MacManus, K. P. Garry, and J. L. Stollery

Description: A new method to measure shock wave unsteadiness is presented. Time-resolved visualizations of the flow field under investigation are obtained using a high-speed schlieren optical system and the motion of the shock wave is determined by means of digital image processing. Information on the shock’s unsteadiness is subsequently derived with Fourier analysis. A sample study on shock unsteadiness in a shock-wave/turbulent boundary-layer interaction with separatio...

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