Deutsches Zentrum f. Luft- und Raumfahrt e.V. (DLR)

Optical measurements in sound-producing supersonic jets

DLR-Kolloquium Göttingen
REFERENT: Dr. Daniel Edgington-Mitchell, Monash University Melbourne
TITEL: Optical measurements in sound-producing supersonic jets
ZEIT: Montag, den 06.Juni 2016
15.00 Uhr Vortragsbeginn
ORT: DLR Göttingen, Adolf-Busemann-Raum (Haus 7, EG)
Abstract: This talk will cover a body of work undertaken in the Laboratory for Turbulence Research in Aerospace and Combustion at Monash University, using a range of optical diagnostic techniques to study shock-containing supersonic jet flows. Schlieren, Background-Oriented-Schlieren and Particle Image Velocimetry are applied to the investigation of sound-production phenomena in free and impinging shear flows from a range of nozzle geometries. Measurement and analysis techniques specific to these flows will be discussed, as well as current approaches to the investigation of shock-related noise and turbulent mixing noise.
Dr. Daniel Edgington-Mitchell received his undergraduate degrees in Mechanical and Aerospace Engineering from Monash University in 2005, and his PhD (on shock-vortex interaction in screeching jets) in 2013. In 2008-2009 he was a visiting researcher at Stanford University as a Fulbright Fellow, studying the use of Planar Laser Induced Fluorescence for optical thermometry in shock tube flows. His current research focus is split between the aeroacoustics of supersonic flows, and multi-phase flows for pharmaceutical applications. He is currently working as a Lecturer in the Department of Mechanical and Aerospace Engineering at Monash University.