Interferometric temperature measurements of a flame in a cylindrical tube using holography.
Double-exposure holographic interferometry was used to determine, at one instant, the entire temperature distribution of an axisymmetric flame propagating through a 51-mm i.d. cylindrical tube. The algorithm used to reconstruct the 2-D temperature distribution included a numerical form of the Abel inversion and a ray-tracing routine to correct for light-ray refraction by the quartz tube. Errors due to flame refraction were minimized by observing the interferogram in the image of the tube center line. The precision of the technique was determined by comparing radial temperature distributions from five separate experiments. The sources of the imprecision and inaccuracies observed in the data are discussed.
Reuss
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Schultz
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