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Proceedings Paper

Continuous temperature measurements in turbulent combustion by laser-beam deflection tomography
Author(s): Klaus Gerstner; Andreas Fehl; Joern Otten; Dirk Neidhardt; Theo T. Tschudi
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Paper Abstract

Beam-deflection optical tomography was applied to measure the 2D temperature field of a turbulent hydrogen diffusion flame. The temperature distribution calculated with a filtered back-projection algorithm agrees well with the result of a temperature measurement using Raman spectroscopy. This was proved with a high number of projections. For enclosed flames wit restricted optical access and in the case of time-continuous measurements, however, the number of sampling points and viewing directions is limited. In this case, algebraic reconstruction techniques are well suited for tomography. These algorithms have been adapted for temperature measurements in flames by laser beam deflection. Experiments and simulations were performed to estimate the spatial resolution and accuracy with a varying number of input data.

Paper Details

Date Published: 21 November 1997
PDF: 5 pages
Proc. SPIE 3172, Optical Technology in Fluid, Thermal, and Combustion Flow III, (21 November 1997); doi: 10.1117/12.293402
Show Author Affiliations
Klaus Gerstner, Technische Hochschule Darmstadt (Germany)
Andreas Fehl, Technische Hochschule Darmstadt (Germany)
Joern Otten, Technische Hochschule Darmstadt (Germany)
Dirk Neidhardt, Technische Hochschule Darmstadt (Germany)
Theo T. Tschudi, Technische Hochschule Darmstadt (Germany)

Published in SPIE Proceedings Vol. 3172:
Optical Technology in Fluid, Thermal, and Combustion Flow III
Soyoung Stephen Cha; James D. Trolinger; Masaaki Kawahashi, Editor(s)

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