Efficient large-scale scattering analysis of objects in a stratified medium

Research output: Contribution to journalArticle

Abstract

An efficient method is presented to analyze electromagnetic scattering of large-scale objects in a stratified medium. The method introduces an inhomogeneous absorbing boundary condition (ABC) to truncate an infinite stratified medium for the finite-element analysis. It then adopts the dual-primal finite-element tearing and interconnecting (FETI-DP) algorithm with distributed computing to enable and speed up large-scale simulations on a computer cluster. Finally, the method utilizes the reciprocity theorem to simplify scattered field calculation and employs the multilevel fast multipole algorithm (MLFMA) to improve the computational efficiency. Three verification examples are presented to demonstrate the solution accuracy of the proposed method, followed by an electrically large example to demonstrate the capability of the method for large-scale electromagnetic modeling of objects in a stratified medium.

Original languageEnglish (US)
Article numbere2656
JournalInternational Journal of Numerical Modelling: Electronic Networks, Devices and Fields
DOIs
StateAccepted/In press - Jan 1 2019

Fingerprint

Scattering
Distributed computer systems
Computational efficiency
Boundary conditions
Finite element method
FETI-DP
Finite Element
Truncate
Absorbing Boundary Conditions
Electromagnetic Scattering
Primal-dual
Reciprocity
Distributed Computing
Computational Efficiency
Demonstrate
Simplify
Speedup
Object
Theorem
Modeling

Keywords

  • electromagnetic scattering
  • finite-element method
  • inhomogeneous absorbing boundary condition
  • parallel FETI-DP algorithm
  • stratified medium

ASJC Scopus subject areas

  • Modeling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

@article{e504b9c659784e70b308c2f2bd685c6d,
title = "Efficient large-scale scattering analysis of objects in a stratified medium",
abstract = "An efficient method is presented to analyze electromagnetic scattering of large-scale objects in a stratified medium. The method introduces an inhomogeneous absorbing boundary condition (ABC) to truncate an infinite stratified medium for the finite-element analysis. It then adopts the dual-primal finite-element tearing and interconnecting (FETI-DP) algorithm with distributed computing to enable and speed up large-scale simulations on a computer cluster. Finally, the method utilizes the reciprocity theorem to simplify scattered field calculation and employs the multilevel fast multipole algorithm (MLFMA) to improve the computational efficiency. Three verification examples are presented to demonstrate the solution accuracy of the proposed method, followed by an electrically large example to demonstrate the capability of the method for large-scale electromagnetic modeling of objects in a stratified medium.",
keywords = "electromagnetic scattering, finite-element method, inhomogeneous absorbing boundary condition, parallel FETI-DP algorithm, stratified medium",
author = "Kedi Zhang and Goddard, {Lynford L.} and Jin, {Jian Ming}",
year = "2019",
month = "1",
day = "1",
doi = "10.1002/jnm.2656",
language = "English (US)",
journal = "International Journal of Numerical Modelling: Electronic Networks, Devices and Fields",
issn = "0894-3370",
publisher = "John Wiley and Sons Ltd",

}

TY - JOUR

T1 - Efficient large-scale scattering analysis of objects in a stratified medium

AU - Zhang, Kedi

AU - Goddard, Lynford L.

AU - Jin, Jian Ming

PY - 2019/1/1

Y1 - 2019/1/1

N2 - An efficient method is presented to analyze electromagnetic scattering of large-scale objects in a stratified medium. The method introduces an inhomogeneous absorbing boundary condition (ABC) to truncate an infinite stratified medium for the finite-element analysis. It then adopts the dual-primal finite-element tearing and interconnecting (FETI-DP) algorithm with distributed computing to enable and speed up large-scale simulations on a computer cluster. Finally, the method utilizes the reciprocity theorem to simplify scattered field calculation and employs the multilevel fast multipole algorithm (MLFMA) to improve the computational efficiency. Three verification examples are presented to demonstrate the solution accuracy of the proposed method, followed by an electrically large example to demonstrate the capability of the method for large-scale electromagnetic modeling of objects in a stratified medium.

AB - An efficient method is presented to analyze electromagnetic scattering of large-scale objects in a stratified medium. The method introduces an inhomogeneous absorbing boundary condition (ABC) to truncate an infinite stratified medium for the finite-element analysis. It then adopts the dual-primal finite-element tearing and interconnecting (FETI-DP) algorithm with distributed computing to enable and speed up large-scale simulations on a computer cluster. Finally, the method utilizes the reciprocity theorem to simplify scattered field calculation and employs the multilevel fast multipole algorithm (MLFMA) to improve the computational efficiency. Three verification examples are presented to demonstrate the solution accuracy of the proposed method, followed by an electrically large example to demonstrate the capability of the method for large-scale electromagnetic modeling of objects in a stratified medium.

KW - electromagnetic scattering

KW - finite-element method

KW - inhomogeneous absorbing boundary condition

KW - parallel FETI-DP algorithm

KW - stratified medium

UR - http://www.scopus.com/inward/record.url?scp=85073970399&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85073970399&partnerID=8YFLogxK

U2 - 10.1002/jnm.2656

DO - 10.1002/jnm.2656

M3 - Article

AN - SCOPUS:85073970399

JO - International Journal of Numerical Modelling: Electronic Networks, Devices and Fields

JF - International Journal of Numerical Modelling: Electronic Networks, Devices and Fields

SN - 0894-3370

M1 - e2656

ER -