Adjoint Sensitivity Analysis for Uncertain Material Parameters in Frequency-Domain 3-D FEM

Autor:	Cam Key, Branislav M. Notaros, Donald Estep, Jake Harmon, Troy Butler
Rok vydání:	2021
Předmět:	Permittivity Physics Stochastic process Scattering Electric field Frequency domain Monte Carlo method Applied mathematics Sensitivity (control systems) Electrical and Electronic Engineering Finite element method
Zdroj:	IEEE Transactions on Antennas and Propagation. 69:6669-6679
ISSN:	1558-2221 0018-926X
Popis:	We present an application of adjoint analysis for efficient sensitivity analysis and estimation of quantities of interest in the presence of uncertain model parameters in 3-D finite element method (FEM) scattering problems. We demonstrate that the adjoint solution may be leveraged to expedite quantification of uncertainty in the scattering model with extremely high accuracy and vast efficiency improvements in comparison to classic gradient approximation techniques and Monte Carlo (MC) methods. The proposed method is demonstrated for low- and high-dimensional parameter spaces for scattered electric field quantities of interest (QoIs). The results indicate strong agreement with equivalent Monte Carlo simulations for QoI responses and probability densities.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4e46fbcc2e6931372cc301732b5647d9 https://doi.org/10.1109/tap.2021.3070059 Zobrazit plný text záznamu