Temperature Field Reconstruction by Acoustic Based on Newton-Raphson Regularization Iteration

Abstract

The principle of three-dimensional temperature field reconstruction by acoustic is introduced. In order to realize the three-dimensional temperature field reconstruction by acoustic, the Newton-Raphson method based on the least square method is developed. Three-dimensional temperature field is reconstructed by regularization iteration method that the regularization term is added according to the features of temperature field distribution. It is shown that the algorithm of Newton-Raphson and regularization iteration can realize the reconstruction of the temperature field.