Fundamental elucidation of nonlinear interaction during combustion oscillations

2021 Fiscal Year Final Research Report

• Project/Area Number: 19H02085
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 19020:Thermal engineering-related
• Research Institution: Tokyo University of Science
• Principal Investigator: Gotoda Hiroshi 東京理科大学, 工学部機械工学科, 教授 (00434712)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 燃焼振動 / 複雑ネットワーク / 同期

Outline of Final Research Achievements

We have experimentally elucidated the spatiotemporal dynamics and nonlinear interaction during combustion oscillations in a swirl-stabilized turbulent combustor using a sophisticated complex systems approach based on dynamical systems, symbolic dynamics, synchronization and complex networks. We have also proposed a novel methodology to capture a precursor of combustion oscillations using a support vector machine in terms of machine learning.

Free Research Field

熱工学

Academic Significance and Societal Importance of the Research Achievements

燃焼振動による強い圧力変動が生じると,燃焼器の致命的な破損やライフサイクルの低下を引き起こす.そのため,燃焼振動のダイナミクスの基礎的な解明や予兆検知技術は発電用ガスタービンエンジンや航空エンジンのみならず,ロケットエンジン燃焼器開発においても重要である.本研究で得られた研究成果は,熱工学分野の学理体系化に大きく繋がるものである.