Megahertz Schlieren Imaging of Shock Structure and Sound Waves in Under-Expanded, Impinging Jets
Fluid Dynamics
2010-10-18 v1
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.
Keywords
Cite
@article{arxiv.1010.3186,
title = {Megahertz Schlieren Imaging of Shock Structure and Sound Waves in Under-Expanded, Impinging Jets},
author = {Christian Willert and Daniel Mitchell and Julio Soria},
journal= {arXiv preprint arXiv:1010.3186},
year = {2010}
}
Comments
Contribution to "Gallery of Fluid Motion", 63rd Annual APS-DFD Meeting, Long Beach (CA)