Comparison of Various Methods for Simultaneous Retrieval of Surface Emissivities and Gas Properties in Gray Participating Media

摘要: An inverse radiation analysis for simultaneous estimation of the radiative properties and surface emissivities a participating medium in between infinitely long parallel planes, from knowledge measured temperatures heat fluxes at boundaries, is presented. The differential discrete ordinate method employed to solve transfer equation. present considers three types simple scattering phase functions. problem solved through minimization performance function, which expressed by sum squares residuals calculated observed boundaries. To check accuracy retrieval, comparison presented four retrieval methods, viz. Levenberg-Marquardt algorithm, genetic artificial neural network, Bayesian algorithm. results analyses indicate that good precision could be achieved using only study shows can retrieved even with noisy data algorithm network. Also, demonstrate algorithms are not efficient but quite robust. Additionally, it an increase error measurements significantly deteriorates