2010/10/15 by Christian Willert, Willert, Christian, Daniel Edgington-Mitchell +3
Engineering · #Aerodynamics and Acoustics in Jet Flows #FOS: Physical sciences #Flow Measurement and Analysis #Fluid Dynamics (physics.flu-dyn) #Fluid Dynamics and Turbulent Flows
paper · pdf · doi:10.48550/arxiv.1010.3186
openalex publication_date 2010/10/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.