• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Compressible-flow engine-valve analysis with response motion and contact

Research Project

Project/Area Number 19K20287
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 60100:Computational science-related
Research InstitutionTokyo University of Science (2020-2022)
Waseda University (2019)

Principal Investigator

Otoguro Yuto  東京理科大学, 理工学部機械工学科, 助教 (10801160)

Project Period (FY) 2019-04-01 – 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 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords接触解析 / アイソジオメトリック解析 / Space--Time法 / トポロジー変化 / 移動境界問題 / 数値流体解析 / 圧縮性流体 / エンジンバルブ
Outline of Research at the Start

自動車用エンジンはバルブが高速に開閉すなわち接触・解離を繰り返す問題である。バルブの開閉には若干の遊びがあり、その開閉は流れとの強い連成問題となる。開閉のタイミングが変わればエンジン性能に大きな違いをもたらす。本研究では数値計算に着目する。接触を伴う問題の流体計算を安定かつ高制度に行うためには、計算格子の制御が課題となる。
本研究ではこれらの課題を解決し , 流体の圧縮性による接触挙動と流れ場の関係を明らかにする。

Outline of Final Research Achievements

This research aims to develop a computational method for fluid--structure interaction problems such as valve opening and closing, where contact and detach are repeated. We have developed the method for describing the contact of objects. The new contact analysis method absed on a spatial discretization using high continuity and a formulation that can describe time variation is proposed, which realizes smooth contact, proposes a fundamental method for fluid-structure interaction analysis caused by valve contact.

Academic Significance and Societal Importance of the Research Achievements

本研究の主な学術的成果は,時間変動を記述できる構造計算手法を構築したことと柔軟な接触解析手法を提案したことの二つが挙げられる.これらの基本的なフレームワークは接触解析だけでなく,種々の連成解析にも有用であり,さらに計算格子生成の負荷低減が期待できる.したがって,これらのフレームワークを応用することで,産業界における現場等においてもCAEをより簡便に導入できることになり,設計・開発の可能性を高めることが期待できる.

Report

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

    (3 results)

All 2021 2019

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] Space--time VMS flow analysis of a turbocharger turbine with isogeometric discretization: computations with time-dependent and steady-inflow representations of the intake/exhaust cycle2019

    • Author(s)
      Otoguro Yuto、Takizawa Kenji、Tezduyar Tayfun E.、Nagaoka Kenichiro、Avsar Reha、Zhang Yutong
    • Journal Title

      Computational Mechanics

      Volume: 64 Issue: 5 Pages: 1403-1419

    • DOI

      10.1007/s00466-019-01722-2

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 移動境界流体問題のSpace--Time法による定式化と複雑形状におけるIsogeometric離散化2021

    • Author(s)
      乙黒 雄斗
    • Organizer
      第11回計算力学シンポジウム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Space--Time Computational Methods and Isogeometric Discretization for Flow Problems with Complex Geometries and Moving Boundaries and Interfaces2019

    • Author(s)
      Yuto Otoguro
    • Organizer
      Advances in Computational Fluid--Structure Interaction and Flow Simulation A Conference on New Methods and Challenging Computations
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi