Spectrometric System for Characterizing Drop and Powder Trajectories and Chemistry in Reactive Flows

Author:

Cabalo Jerry C.1,Schmidt John1,Wendt Jost O. L.1,Scheeline Alexander1

Affiliation:

1. Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave., Urbana, Illinois 61801 (J.C.C., A.S.); and Department of Chemical and Environmental Engineering, University of Arizona, 1133 N. Campus Dr., Tucson, Arizona 85721 (J.C.C., J.S., J.O.L.W.)

Abstract

An instrument for emission, fluorescence, and scattering diagnostics of a 22 kW gas/air thermal reactor is described. Z-pair parabolic mirrors provide diffraction-limited imaging in field center, with worst-case blur over a 12.8 mm field of view having a radius of 0.044 mm rms. Either full-field filtered or transverse line dispersed viewing can occur simultaneously. Dispersion is achieved using a 2-m spectrograph f-matched to the feed optics. Examples of data show non-axisymmetric flow in a nominally laminar flow system, drop shapes in situ, and Mie scattering from soot.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

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