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

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K20287
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 60100:Computational science-related
• Research Institution: Tokyo 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
• 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

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.

Free Research Field

計算力学

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．