Two-dimensional multispecies imaging of a supersonic nozzle flow
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Updated: Jul 9, 2026

Determining 3D Flow Fields via Multi-camera Light Field Imaging
Published on: March 6, 2013
N M Sijtsema1, R A Tolboom, N J Dam
1Department of Applied Physics, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands.
Abstract:
Raman imaging is shown to be a very suitable technique for simultaneous density mapping of different species in dry air and N(2) supersonic nozzle flows. The salient features of Raman scattering are its molecular sensitivity and the fact that it can be spectrally separated from strong reflections and Mie scattering. We collected Raman images of both N(2) and O(2) concurrently by imaging the flow through an imaging spectrograph with a broad entrance slit onto a CCD camera. The main advantage of this method is that different species can be imaged under exactly the same flow conditions.
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