中国电机工程学报2024，Vol.44Issue(4)：1460-1467,中插17,9.DOI:10.13334/j.0258-8013.pcsee.222171
燃气轮机透平盘腔流动换热及轮盘热固耦合特性数值研究
Numerical Study on Flow and Heat Transfer in Gas Turbine Disc Cavity and Thermal-solid Coupling Characteristics of Gas Turbine Disk
摘要
Abstract
Aiming at the safe operation of gas turbine,to ensure the good cooling effect of disk cavity and the reliability of disk strength,the flow heat transfer of disk cavity and thermo-solid coupling characteristics of disk are numerically studied in this paper.An analytical model of three-stage disk cavity is established,and the effects of rotational speed and flow rate on the flow heat transfer characteristics of the disk cavity are studied and compared.The stress and deformation characteristics of disk are analyzed based on the flow heat transfer results.The results show that when the rotational speed increases,the pressure loss in each chamber decreases,and heat exchange surface Nu decreases by 66.1%at most.When the flow coefficient increases,the pressure loss in each chamber increases,and Nu of some heat exchange surfaces presents an upward trend,up to about 198%.The maximum radial deformation is 2.62 mm and the maximum equivalent stress of the disk is 996.06 MPa under the comprehensive action of various loads.The research results provide technical support and reference data for ensuring the safety of gas turbine disk.关键词
燃气轮机/轮盘盘腔/流动换热/热固耦合Key words
gas turbine/disk cavity/flow and heat exchange/thermal-solid coupling分类
能源科技引用本文复制引用
王培宇,张鑫磊,张荻,苏鹏飞,谢永慧,孔祥林..燃气轮机透平盘腔流动换热及轮盘热固耦合特性数值研究[J].中国电机工程学报,2024,44(4):1460-1467,中插17,9.基金项目
国家科技重大专项(J2019-IV-0022-0090). National Science and Technology Major Project(J2019-IV-0022-0090). （J2019-IV-0022-0090）
