Recontruction of temperature measurement for flame using holographic interferometry

Abstract

Temperature field of axisymmetric ethylene diffusion flame is measured using laser holographic interferometry. The projection reversal of a given condition is completed through direct discrete for deformation formula of Abel inverse transformation. Abel inverse transformation is connected with Abel transformation. According to the characteristics of axisymmetric field, Appropriate half data is selected to obtain symmetrization for phase distribution of original data. Self-closing of this algorithm is confirmatory. The above calculation and analysis indicate that the algorithm has well self-closure; The algorithm is unable to eliminate nature that Abel inverse transformation is sensitive to noise in near axis region. The error level causing by self-closure of algorithm is significantly below the self-noise of original data for projected phase.