Temperature distribution measurement in asymmetric geometry using perturbation theory based on an optical method

摘要

In this paper, we introduced a method to measure temperature field of an asymmetric geometry using an optical method. A Mach-Zehnder interferometer assisted by superimposed diffracted waves as a based of the optical method. The asymmetric geometry is consist of a hot wire, which positioned parallel near a cold plate. The exact refractive index distribution of the sources are determined due to their symmetries, independently and we benefited from perturbation theory to consider the mutual effect of the source and sink. The results perfectly represent that the model predictions are in good agreement with the extracted experimental results, in which, the obtained temperature field has deviation less than0.5°C from thermometer measurements.