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Megahertz schlieren imaging of shock structure and sound waves in under-expanded, impinging jets
Willert, Christian and Mitchell, Daniel and Soria, Julio (2010) Megahertz schlieren imaging of shock structure and sound waves in under-expanded, impinging jets. In: Gallery of Fluid Motion. 63rd Annual Meeting, American Physical Society, Division of Fluid Dynamics (DFD), 21.-23. Nov. 2010, Long Beach (CA), USA.
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Official URL: http://arxiv.org/abs/1010.3186
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.
| Document Type: | Conference or Workshop Item (Other) | ||||||||
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| Title: | Megahertz schlieren imaging of shock structure and sound waves in under-expanded, impinging jets | ||||||||
| Authors: |
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| Date: | November 2010 | ||||||||
| Journal or Publication Title: | Gallery of Fluid Motion | ||||||||
| Status: | Published | ||||||||
| Keywords: | flow visualization, high speed imaging, supersonic flow, light emitting diode, overdriven LED, pulsed illumination | ||||||||
| Event Title: | 63rd Annual Meeting, American Physical Society, Division of Fluid Dynamics (DFD) | ||||||||
| Event Location: | Long Beach (CA), USA | ||||||||
| Event Type: | international Conference | ||||||||
| Event Dates: | 21.-23. Nov. 2010 | ||||||||
| Organizer: | University of Southern California, California State University Long Beach, California Institute of Technology, University of California Los Angeles | ||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||
| HGF - Program: | Aeronautics | ||||||||
| HGF - Program Themes: | L ER - Engine Research | ||||||||
| DLR - Research area: | Aeronautics | ||||||||
| DLR - Program: | L ER - Engine Research | ||||||||
| DLR - Research theme (Project): | L - Virtual Engine and Validation Methods | ||||||||
| Location: | Köln-Porz | ||||||||
| Institutes and Institutions: | Institute of Propulsion Technology > Engine Measurement Systems | ||||||||
| Deposited By: | Dr.phil. Christian Willert | ||||||||
| Deposited On: | 16 Dec 2010 13:35 | ||||||||
| Last Modified: | 16 Dec 2010 13:35 |
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