机械制造与自动化2026，Vol.55Issue(3)：38-42,57,6.DOI:10.19344/j.cnki.issn1671-5276.2026.03.008
非均匀受热贫油直喷燃烧室动力学特性分析
Analysis of Dynamic Properties of Lean Direct Injection Combustion Chamber Under Non-uniform Heating
刘璐1
作者信息
- 1. 南京航空航天大学能源与动力学院,江苏南京 210016
- 折叠
摘要
Abstract
This paper focuses on the lean direct injection combustion chamber and establishes a finite meta-model under different temperature loads.When the dynamic properties of the combustion chamber in various unevenly-distributed heating environments are simulated and calculated,it is spotted that certain order modal experiences modal shifting phenomena when combustion chamber is under different thermal conditions.As vibration tests were conducted on the combustion chamber under combustion conditions,the analysis results indicated that the non-uniform temperature distribution inside the combustion chamber led to structural configuration changes.The deformation that happened to a hyperbolic-like-shaped dome directly caused modal shifting in the combustion chamber.The dynamic property variation pattern of the lean direct injection combustion chamber under non-uniform temperature loads provides valuable insights for the structural and dynamic optimization design in engineering practice,contributing to the extension of its operational lifespan.关键词
贫油直喷燃烧室/不均匀温度场/动力学特性/模态分析Key words
lean direct injection combustion chamber/non-uniform temperature field/dynamic properties/modal analysis分类
航空航天引用本文复制引用
刘璐..非均匀受热贫油直喷燃烧室动力学特性分析[J].机械制造与自动化,2026,55(3):38-42,57,6.
