摘要
对火焰筒浮动瓦块结构进行了热-流-结构耦合数值分析研究。采用整场求解的热-流耦合方法计算瓦块结构的温度分布;并利用热-结构间接耦合的有限元分析方法计算瓦块的结构强度。研究表明:瓦块结构的应力和变形主要由温度载荷决定,机械载荷对结构变形和最小应力有较大影响,因此对火焰筒浮动瓦块进行结构分析时需要同时考虑温度载荷与压力载荷。建立的浮动瓦块结构热-流-结构耦合分析方法是可行的。
We carry out the numerical analysis of the thermal-flow-structural coupling of the float-wall of a combus- tor chamber. We use the heat-flow coupling method to 6alculate the float-wall＇s temperature distribution and the thermal-structural indirect coupling finite element method to calculate its structural strength. The analysis results show that ： the stress and deformation of the float-wall are mostly caused by the temperature load ; the mechanical load exercises a great influence on the deformation and the minimum stress of the float wall ; therefore the analysis of its structure needs to consider both its temperature load and pressure load; our numerical analysis method is feasible and applicable.
出处
《机械科学与技术》
CSCD
北大核心
2012年第7期1196-1200,1204,共6页
Mechanical Science and Technology for Aerospace Engineering
基金
航空基金项目(APTD)资助
关键词
火焰筒
浮动瓦块
热-流耦合
热-结构耦合
数值模拟
combustor chamber
float-wall
thermal-flow-structural coupling
numerical analysis
