A Hybrid Dung Beetle Optimization Algorithm with Simulated Annealing for the Numerical Modeling of Asymmetric Wave Equations

作     者：Wei Xu-ruo Bai Wen-lei Liu Lu Li You-ming Wang Zhi-yang 魏旭若;白文磊;李幼铭;刘璐;王之洋

作者机构：College of Information Science and TechnologyBeijing University of Chemical TechnologyBeijingPRC Key Laboratory of Petroleum Resources ResearchInstitute of Geology and GeophysicsChinese Academy of SciencesBeijingPRC University of Chinese Academy of SciencesBeijingChina Aramco Research Center-BeijingAramco AsiaBeijingChina 

基　　金：supported by project XJZ2023050044 A2309002 and XJZ2023070052 

出 版 物：《Applied Geophysics》 (应用地球物理（英文版）)

年 卷 期：2024年第21卷第3期

页      码：513-527,618页

摘      要：In the generalized continuum mechanics(GCM)theory framework,asymmetric wave equations encompass the characteristic scale parameters of the medium,accounting for microstructure *** study integrates two theoretical branches of the GCM,the modified couple stress theory(M-CST)and the one-parameter second-strain-gradient theory,to form a novel asymmetric wave equation in a unified *** modeling of the asymmetric wave equation in a unified framework accurately describes subsurface structures with vital implications for subsequent seismic wave inversion and imaging ***,employing finite-difference(FD)methods for numerical modeling may introduce numerical dispersion,adversely affecting the accuracy of numerical *** design of an optimal FD operator is crucial for enhancing the accuracy of numerical modeling and emphasizing the scale ***,this study devises a hybrid scheme called the dung beetle optimization(DBO)algorithm with a simulated annealing(SA)algorithm,denoted as the SA-based hybrid DBO(SDBO)*** FD operator optimization method under the SDBO algorithm was developed and applied to the numerical modeling of asymmetric wave equations in a unified *** the DBO and SA algorithms mitigates the risk of convergence to a local *** numerical dispersion outcomes underscore that the proposed SDBO algorithm yields FD operators with precision errors constrained to 0.5‱while encompassing a broader spectrum *** result confirms the efficacy of the SDBO ***,the numerical modeling results demonstrate that the new FD method based on the SDBO algorithm effectively suppresses numerical dispersion and enhances the accuracy of elastic wave numerical modeling,thereby accentuating scale *** result is significant for extracting wavefield perturbations induced by complex microstructures in the medium and the analysis of scale effects.

主 题 词：Finite-difference Asymmetric wave equation Numerical modeling DBO algorithm SA algorithm 

学科分类：07[理学] 0708[理学-地球物理学类] 0701[理学-数学类] 070101[070101] 

核心收录：

D　O　I：10.1007/s11770-024-1039-1

馆 藏 号：203125248...