航空发动机内冷涡轮叶片使用载荷多场耦合分析
Multi-field conjugate analysis of working load for aeroengine internal cooling turbine blade
王艳艳 1李宗阳2
作者信息
- 1. 上海飞机设计研究院,上海 201210
- 2. 上海机电工程研究所,上海 201109
- 折叠
摘要
为准确估计航空发动机内冷涡轮叶片实际状态下的使用载荷,将气热耦合与热-结构有限元分析相结合,提出了一种使用载荷多场耦合分析方法.该方法首先通过气热耦合求解的方式对涡轮叶片的叶外燃气流、叶内冷却流及叶片固体传热进行计算,以获得叶片实际工作状态下准确的温度与气动分布,然后利用守恒插值程序实现耦合载荷信息向热-结构有限元模型的精确传递,进而通过热-结构有限元分析实现使用载荷多场耦合分析.实验数据验证与实例计算结果表明了气热耦合及使用载荷多场耦合分析的有效性与准确性.最后进行了参数敏感性分析定量给出了各边界条件不确定性对耦合计算结果的影响程度.
Abstract
In order to accurately estimate the working load in the actual state of air-thermal coupling and heat-struc-ture finite element analysis,a multi-field coupling analysis method is proposed.This method first calculates the out-er gas flow,inner cooling flow and blade solid heat transfer of the turbine blade to obtain the accurate temperature and aerodynamic distribution of the blade in the actual state,and then transfer the coupling load information to the heat-structure finite element model,and then realize the load multi-field coupling analysis through the heat-struc-ture finite element analysis.The results of experimental data verification and example calculation show the effective-ness and accuracy of gas-thermal coupling and using load multi-field coupling analysis.Finally,the parameter sen-sitivity analysis quantitatively gives the degree of the uncertainty of each boundary condition affecting the coupling calculation.
关键词
涡轮叶片/使用载荷/多场耦合分析/气热耦合/敏感性分析Key words
turbine blade/use load/multi-field coupling analysis/gas-thermal coupling/sensitivity analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据