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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)
Title:Megahertz schlieren imaging of shock structure and sound waves in under-expanded, impinging jets
Authors:
AuthorsInstitution or Email of Authors
Willert, Christianchris.willert@dlr.de
Mitchell, DanielMonash University
Soria, JulioMonash University
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:Propulsion Systems
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:12 Dec 2013 21:03

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