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Measurement of shock wave unsteadiness using a high-speed schlieren system and digital image processing

By D. Estruch-Samper, Nicholas J. Lawson, David G. MacManus, Kevin P. Garry and J. L. Stollery


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 separation is included. The method presented enables a measure of shock unsteadiness at locations in the imaged flow field not accessible by intrusive methods

Publisher: American Institute of Physics
Year: 2008
DOI identifier: 10.1063/1.3053361
OAI identifier:
Provided by: Cranfield CERES

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