中国科学院大学学报2024，Vol.41Issue(1)：65-69,5.DOI:10.7523/j.ucas.2022.041
无限元-谱元混合法在2.5维引力位计算中的应用
Application of infinite-spectral hybrid method in 2.5-dimensional gravitational potential calculation
摘要
Abstract
Gravitational potential is an inseparable part of the earth's free oscillation simulation.It is also the object of calculation in the study of gravity anomalies.Since the gravitational potential satisfies the unbounded Poisson-Laplace equation,which is zero at infinity,this is frustrating for numerical simulations.The purpose of numerical simulation is usually achieved by limiting the solution domain and approximating its boundary conditions.We attempt to use the infinite-spectral hybrid method to fit the infinity boundary directly and no longer approximate the boundary conditions.Considering the computational efficiency of the 3D Earth model,this study uses a 2.5-dimensional governing equation.Finally,numerical experiments verify the factual accuracy of this method.关键词
无限元/谱元/引力位/2.5维/泊松-拉普拉斯方程Key words
infinite element/SEM/gravitational potential/2.5D/Poisson-Laplace's equation分类
天文与地球科学引用本文复制引用
任骏声,张怀..无限元-谱元混合法在2.5维引力位计算中的应用[J].中国科学院大学学报,2024,41(1):65-69,5.基金项目
国家杰出青年科学基金(41725017)资助 （41725017）
