Spray and gaseous jet diagnostics using x-ray-induced fluorescence imaging and flash radiography

Laurent Hure; Eric Robert; Christophe Cachoncinlle; Raymond Viladrosa; Jean-Michel Pouvesle; Y. Michou; Iskender Gokalp

doi:10.1117/12.424318

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17 April 2001 Spray and gaseous jet diagnostics using x-ray-induced fluorescence imaging and flash radiography

Laurent Hure, Eric Robert, Christophe Cachoncinlle, Raymond Viladrosa, Jean-Michel Pouvesle, Y. Michou, Iskender Gokalp

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Proceedings Volume 4183, 24th International Congress on High-Speed Photography and Photonics; (2001) https://doi.org/10.1117/12.424318
Event: 24th International Congress on High-Speed Photography and Photonics, 2000, Sendai, Japan

Abstract

The characterization of near nozzle dense sprays and axisymmetric gas jets using X-ray flash techniques is presented. Flash radiography and X-ray induced fluorescence imaging (X.I.F. imaging), using a flash X-ray developed at GREMI, offer two complementary diagnostics particularly efficient in high pressure conditions. In this work, a compact flash X-ray device is used to freeze fluid motions. Single shot radiographs of argon jets and water sprays expanding in ambient air have been performed. Radial density profiles were measured and quantitative density measurements have been extracted for argon, nitrogen-argon mixture and water jets, using flash X-ray radiography. UV fluorescence emissions due to X-ray excitation of the jet species were imaged on a gated intensified CCD camera.

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Laurent Hure, Eric Robert, Christophe Cachoncinlle, Raymond Viladrosa, Jean-Michel Pouvesle, Y. Michou, and Iskender Gokalp "Spray and gaseous jet diagnostics using x-ray-induced fluorescence imaging and flash radiography", Proc. SPIE 4183, 24th International Congress on High-Speed Photography and Photonics, (17 April 2001); https://doi.org/10.1117/12.424318

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