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Electromagnetic Wave Propagation Simulations in Microscopic Scale Domains by Meshless Method

Research Project

Project/Area Number 18K11329
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 60090:High performance computing-related
Research InstitutionNihon University

Principal Investigator

ITOH Taku  日本大学, 生産工学部, 准教授 (80433853)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsメッシュレス法 / 電磁波伝搬シミュレーション / MTDM / 形状関数 / ハイブリッド法 / 仮想節点 / 電磁シールド / 発泡金属 / 電磁波伝播シミュレーション / IMLS / 微小スケール領域 / 反射軽減 / 節点密度 / 形状関数生成 / サブグリッド法 / FDTD / 電磁波伝搬解析
Outline of Final Research Achievements

In this study, to stably execute electromagnetic wave propagation simulations containing a micro domain with fine mesh, we have proposed a method to combine different-mesh-size FDTD-calculation domains, through a domain calculated by MTDM. The strategy has been applied to simulations around a probe of near-field scanning optical microscopy. The simulation results show that the electromagnetic wave smoothly propagates between domains calculated by FDTD and MTDM at least while 2850000 time-steps. In addition, to generate IMLS shape functions with a natural distribution even near the boundaries, we have proposed a strategy by arranging virtual nodes near the outside of boundaries. Note that the differentials of IMLS shape functions are required in MTDM-calculation steps practically. By using the strategy, the distributions for differentials of IMLS shape functions are particularly improved.

Academic Significance and Societal Importance of the Research Achievements

FDTDにおいて使用されることのあるサブグリッド法では,異なるサイズのメッシュの繋ぎ目で計算が不安定になり,場合によってはシミュレーションが数千ステップで破綻してしまうことがある.一方,本研究で提案したFDTDとMTDMを用いる方法を,サブグリッド法を適用したいがその不安定性から適用されてこなかった問題等に適用することで,メモリコストや演算コストを抑えつつ,安定的にシミュレーションをすることができると考えられる.また,仮想節点による形状関数生成法は他のメッシュレス法にも適用でき,不安定性の要因になり得るものの1つを排除できるため,今後メッシュレス法を活用できる場面が増える可能性がある.

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (34 results)

All 2022 2021 2020 2019 2018

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (27 results) (of which Int'l Joint Research: 20 results)

  • [Journal Article] Performance Evaluation of Electromagnetic Shield Constructed from Open-Cell Metal Foam Based on Sphere Functions2022

    • Author(s)
      Hanaoka Yuya、Itoh Taku、Tateyama Kohei、Nakata Susumu、Watanabe Keiko
    • Journal Title

      Computer Modeling in Engineering & Sciences

      Volume: 132 Issue: 1 Pages: 43-53

    • DOI

      10.32604/cmes.2022.016831

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Mesh-Generation Scheme for the Large Helical Device Based on the Structure of Magnetic-Field Lines2021

    • Author(s)
      D. Takada, T. Itoh, M. Kobayashi, and H. Nakamura
    • Journal Title

      Plasma and Fusion Research

      Volume: 16 Issue: 0 Pages: 2401086-2401086

    • DOI

      10.1585/pfr.16.2401086

    • NAID

      130008064607

    • ISSN
      1880-6821
    • Year and Date
      2021-07-05
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shape Modelling of Metal Foams of Open/Closed States and their Intermediates by Implicit Function2021

    • Author(s)
      Y. Hanaoka, T. Itoh, K. Tateyama, S. Nakata, and K. Watanabe
    • Journal Title

      Journal of Advanced Simulation in Science and Engineering

      Volume: 8 Issue: 1 Pages: 143-153

    • DOI

      10.15748/jasse.8.143

    • NAID

      130008051334

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sphere-Function-Based Shape Modelling of Open Cell Metal Foam with Plateau Borders2020

    • Author(s)
      Y. Hanaoka, T. Itoh, S. Nakata, and K. Watanabe
    • Journal Title

      Journal of Advanced Simulation in Science and Engineering

      Volume: 7 Issue: 1 Pages: 89-101

    • DOI

      10.15748/jasse.7.89

    • NAID

      130007834795

    • ISSN
      2188-5303
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three-Dimensional Shape Modelling of Metal Foam with Rounded Cells by Implicit Surfaces2019

    • Author(s)
      Y. Hanaoka, M. Nojiri, T. Itoh, S. Nakata, and K. Watanabe
    • Journal Title

      Journal of Advanced Simulation in Science and Engineering

      Volume: 6 Issue: 1 Pages: 195-214

    • DOI

      10.15748/jasse.6.195

    • NAID

      130007655845

    • ISSN
      2188-5303
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Modified Improved Interpolating Moving Least Squares Method for Meshless Approaches2019

    • Author(s)
      Y. Fujita, S. Ikuno, T. Itoh, and H. Nakamura
    • Journal Title

      IEEE Transactions on Magnetics

      Volume: 55 Issue: 6 Pages: 1-4

    • DOI

      10.1109/tmag.2019.2900374

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Improvement of Convergence Property of Communication Avoiding Conjugate Gradient Method for Linear System Obtained from Meshless Approaches2019

    • Author(s)
      A. Matsumoto, Y. Fujita, T. Itoh, K. Abe, and S. Ikuno
    • Journal Title

      Journal of Advanced Simulation in Science and Engineering

      Volume: 6 Issue: 1 Pages: 43-55

    • DOI

      10.15748/jasse.6.43

    • NAID

      130007614052

    • ISSN
      2188-5303
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] A Paralellization Strategy for Incomplete Decomposition-based Preconditioning for Solving Linear Systems2021

    • Author(s)
      T. Yamashita, T. Itoh, and H. Tadano
    • Organizer
      JSST 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 陰関数を用いたopen-cellの発泡金属の形状モデリング及び電磁シールドへの応用2021

    • Author(s)
      花岡佑哉, 伊東拓, 立山耕平, 仲田晋, 渡辺佳子
    • Organizer
      2020年度非線形問題の解法と可視化に関する研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] Moving Least Squares Approximation with Chebyshev Nodes for Meshless Approaches2021

    • Author(s)
      Y. Fujita, T. Itoh, S. Ikuno, and S. Nakata
    • Organizer
      ICCES 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Condition Number Reduction for An Eigenvalue Problem using Meshless Approach2020

    • Author(s)
      Y. Fujita, S. Ikuno, T. Itoh, and S. Nakata
    • Organizer
      CEFC 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical Evaluations of Adaptive k-skip Mister R for Linear System Obtained from Electromagnetic Analysis2020

    • Author(s)
      T. Morishita, A. Matsumoto, Y. Fujita, T. Itoh, K. Abe, and S. Ikuno
    • Organizer
      CEFC 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Virtual Nodes for Generating Natural Shape Functions for Electromagnetic Wave Propagation Simulation by Meshless Time-Domain Method2020

    • Author(s)
      T. Itoh, Y. Hanaoka, Y. Fujita, S. Ikuno, and H. Nakamura
    • Organizer
      CEFC 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Modelling of Open Cell Metal Foam with Plateau Borders by Implicit Surfaces2020

    • Author(s)
      Y. Hanaoka, T. Itoh, S. Nakata, and K. Watanabe
    • Organizer
      CEFC 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Study on Mesh Generation Scheme Based on Structure of Magnetic Field Lines for Large Helical Device2020

    • Author(s)
      D. Takada, T. Itoh, M. Kobayashi, and H. Nakamura
    • Organizer
      ITC-29
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Shape Modelling of Plateau Borders of Metal Foam by Implicit Surface2019

    • Author(s)
      Y. Hanaoka, T. Itoh, S. Nakata and K. Watanabe
    • Organizer
      JSST 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Implicit Function Generated by Piecewise Polynomial and Radial Basis Function2019

    • Author(s)
      Y. Yagi, Y. Hanaoka, D. Takada and T. Itoh
    • Organizer
      JSST 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical Evaluations of Variable k-skip MrR Method2019

    • Author(s)
      A. Matsumoto, Y. Fujita, T. Itoh, K. Abe and S. Ikuno
    • Organizer
      JSST 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical Evaluation of Communication Avoiding CG and MrR2019

    • Author(s)
      A. Matsumoto, S. Ikuno, T. Itoh, Y. Hanaoka, Y. Fujita, and H. Tadano
    • Organizer
      11th Symposium on ``Discovery, Fusion, Creation of New knowledge by Interdisciplinary Computational Sciences''
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical Evaluations of Meshless Time-Domain Method for Electromagnetic Analysis using Various Shape Functions2019

    • Author(s)
      Y. Fujita, T. Itoh, H. Nakamura, and S. Ikuno
    • Organizer
      ISEM 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electromagnetic Wave Propagation Simulation in a Domain Containing Different Size FDTD Meshes by Connection Strategy Using MTDM2019

    • Author(s)
      T. Itoh, Y. Fujita, S. Ikuno, and H. Nakamura
    • Organizer
      ISEM 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 並列処理を前提とした通信回避Krylov部分空間解法の収束特性と性能評価2019

    • Author(s)
      松元朗,藤田宜久,伊東拓,阿部邦美,生野壮一郎
    • Organizer
      日本応用数理学会2019年度年会
    • Related Report
      2019 Research-status Report
  • [Presentation] 陰関数曲面による発泡金属のソリッドモデル生成2019

    • Author(s)
      花岡佑哉, 伊東拓, 仲田晋, 渡辺圭子
    • Organizer
      日本応用数理学会2019年度年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Variable Preconditioned Mister R for Linear System Obtained by Edge Element Premise on Parallelization2019

    • Author(s)
      A. Matsumoto, Y. Fujita, T. Itoh, K. Abe, and S. Ikuno
    • Organizer
      Compumag 2019
    • Related Report
      2019 Research-status Report
  • [Presentation] Numerical Evaluations of Parallelization Efficiencies of Communication Avoiding Krylov Subspace Method for Large Sparse Linear System2019

    • Author(s)
      A. Matsumoto, T. Itoh, and S. Ikuno
    • Organizer
      ICCES 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Investigation of Block Krylov Subspace Methods with Dummy Right-hand Sides for Solving Linear Systems Obtained by Extended Element-Free Galerkin Method2019

    • Author(s)
      T. Itoh and S. Ikuno
    • Organizer
      ICCES 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] メッシュレス法を用いた2次元の電磁場解析2019

    • Author(s)
      藤田宜久, 伊東拓, 生野壮一郎, 中村浩章
    • Organizer
      【非線形問題の解法と可視化に関する研究会】 2018 年度第 2 回研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] Stable Simulation of Electromagnetic Wave Propagation in Tapered Waveguide by Meshless Time-Domain Method2018

    • Author(s)
      T. Itoh, Y. Fujita, S. Ikuno, and H. Nakamura
    • Organizer
      CEFC 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Convergence Property Improvement and Evaluation of k-skip Conjugate Gradient Method2018

    • Author(s)
      A. Matsumoto, T. Itoh, Y. Fujita, H. Tadano, S. Ikuno and Y. Hanaoka
    • Organizer
      10th Symposium on “Discovery, Fusion, Creation of New knowledge by Interdisciplinary Computational Sciences”
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Three-Dimensional Shape Modelling of Metal Foam with Rounded Cells by Implicit Surfaces2018

    • Author(s)
      Y. Hanaoka, M. Nojiri, T. Itoh, S. Nakata, and K. Watanabe
    • Organizer
      JSST 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Modified Improved Interpolating Moving Least Squares Approximation for Element-free Galerkin Methods2018

    • Author(s)
      Y. Fujita, S. Ikuno, T. Itoh and H. Nakamura
    • Organizer
      JSST 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Improvement of Convergence Property of Communication Avoiding Krylov Subspace Method2018

    • Author(s)
      S. Ikuno, A. Matsumoto, Y. Fujita and T. Itoh
    • Organizer
      JSST 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 通信回避アルゴリズム付き共役勾配法の収束改善2018

    • Author(s)
      松元朗,藤田宜久,伊東拓,生野壮一郎
    • Organizer
      日本応用数理学会2018年度年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 微小スケール領域における電磁波伝搬解析へのメッシュレス法の適用2018

    • Author(s)
      伊東拓,藤田宜久,生野壮一郎,中村浩章
    • Organizer
      日本応用数理学会2018年度年会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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