针对燃气轮机二次空气系统流体网络数值模拟技术，回顾了流体网络数值计算方法和流程以及典型流阻元件流动与传热特性机理等方面的研究进展；重点归纳总结了篦齿封严、轮缘密封和旋转盘腔等二次空气系统重要流阻元件特性分析的常用研究方法与结果；在此基础上，提出二次空气系统流体网络数值模拟技术的发展需求和方向，主要包括：完善二次空气系统稳态计算方法，降低算法初值敏感性并提升收敛速度；流阻元件多物理场耦合数值模拟研究及特性分析；提高元件一维流动模型的计算精度，优化单个流阻元件及其在整个系统中的相互作用，进而提高二次空气系统整体设计水平。

Aiming at the numerical simulation technology of the fluid network in the secondary air system of gas turbines， the research progress in numerical calculation methods and processes， flow characteristics and heat transfer mechanisms of typical flow resistance components， and other aspects are reviewed. The common research methods and results for analyzing the characteristics of important flow resistance components in the secondary air system， such as labyrinth seals， rim seals， and rotating disk cavities， are emphatically summarized. On this basis， the development needs and directions of fluid network numerical simulation technology for secondary air systems are proposed， mainly including improving the steadystate calculation methods for secondary air systems， reducing the sensitivity of initial values of the algorithm and improving the convergence speed， carrying out the multiphysical field coupling numerical simulation study and characteristic analysis of flow resistance elements， improving the calculation accuracy of onedimensional flow models for elements， and optimizing individual flow resistance elements and their interactions in the entire system， thereby improving the overall design level of the secondary air system.

TK472

中科院战略性先导科技专项（E22C080101）