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arXiv · 1010.3186

Megahertz Schlieren Imaging of Shock Structure and Sound Waves in Under-Expanded, Impinging Jets

Christian Willert·Daniel Mitchell·Julio Soria
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Abstract

The accompanying fluid dynamics videos visualize the temporal evolution of shock structures and sound waves in and around an under-expanded jet that is impinging on a rigid surface at varying pressure ratios. The recordings were obtained at frame rates of 500 kHz to 1 Mhz using a novel pulsed illumination source based on a high power light emitting diode (LED) which is operated in pulsed current mode synchronized to the camera frame rate.

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Christian Willert, Daniel Mitchell, Julio Soria. 2010-10-15. Megahertz Schlieren Imaging of Shock Structure and Sound Waves in Under-Expanded, Impinging Jets. https://arxiv.org/abs/1010.3186

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