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Consideration of Diversity of Radiolarians Based on Prey Processes Using Fluid Dynamics

Research Project

Project/Area Number 16K05045
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Computational science
Research InstitutionToyo University

Principal Investigator

Yoshino Takashi  東洋大学, 理工学部, 教授 (60269496)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords形の科学 / 数理プランクトン学 / 放散虫 / 流体力学 / 幾何学 / ストークス抵抗 / 捕食 / 軸対称 / 捕食行動 / 微古生物学 / 進化 / 数値流体力学 / 計算科学 / 数値シミュレーション / 進化生物学
Outline of Final Research Achievements

We proposed a mathematical model to estimate a drag force of a pseudopodium of radiolarians during the prey process. We succeeded in the numerical simulation of the model and the estimation of the drag force. Applying this method to a real specimen, we obtained some fluid mechanical natures of the radiolarian skeleton shape. We tried to extend the model to another genus, however, we obtained only geometrical features of the genus.

Academic Significance and Societal Importance of the Research Achievements

放散虫の形状に対する数理科学的なアプローチは少ないため,本研究課題で取り組んだ流体力学と幾何学を用いた研究は,定量的な研究を可能にする点と今後の研究の枠組みを広げる点で意義がある.また,これまでは参入者が少なかった放散虫の生態観察の必要性を示す意味での意義もあったと考えている.この取組によって得られた結果は,興味の対象がこれまでとは異なるため,放散虫に注目していなかった人々に放散虫研究の意義を伝えることに繋がる.

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (5 results)

All 2018 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Analysis of Turing Patterns on a Spherical Surface Using Polyhedron Approximation2017

    • Author(s)
      Takashi YOSHINO
    • Journal Title

      Forma

      Volume: 32 Pages: 1-6

    • DOI

      10.5047/forma.2017.001

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Geometrical Properties of a Skeletal Structure of RadiolarianDidymocyrtis tetrathalamus (Haeckel)2018

    • Author(s)
      Takashi Yoshino
    • Organizer
      Stereology, Spatial Statistics and Stochastic Geometry
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Retraction Force of Axial Projection of Multi-segmented Nassellarian Eucyrtidium hexastichum (Haeckel)2017

    • Author(s)
      Takashi Yoshino
    • Organizer
      InterRad XV
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 放散虫 Eucyrtidium hexastichum (Haeckel) の仮足の引張力2017

    • Author(s)
      吉野 隆
    • Organizer
      第83回形の科学シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] AXISYMMETRIC FLOW AROUND A HYPERSPHERE IN A 4-DIMENSIONAL SPACE2016

    • Author(s)
      Takashi Yoshino
    • Organizer
      SymmAdelaide 2016
    • Place of Presentation
      Adelaide, Australia
    • Year and Date
      2016-12-01
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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