涡喷发动机涡轮密封舱小气路流场数值计算

推进技术 ›› 2000, Vol. 21 ›› Issue (2): 29-32.

涡喷发动机涡轮密封舱小气路流场数值计算

徐旭,康顺,谭春青,张朝先

中国科学院工程热物理所!北京100083;中国科学院工程热物理所!北京100083;中国科学院工程热物理所!北京100083;航天机电集团公司31所!北京100074

发布日期:2021-08-15

Numerical simulation on viscous flow in the secondary flow path of a turbine sealed cabin

Inst. of Engineering Thermophysics,Academia Sinica,Beijing 100083,China;Inst. of Engineering Thermophysics,Academia Sinica,Beijing 100083,China;Inst. of Engineering Thermophysics,Academia Sinica,Beijing 100083,China;The 31st Research Inst.,Beijing 100074,China

Published:2021-08-15

摘要/Abstract

摘要： 运用 NUMECA的三维粘性流动数值计算软件 FINE/ TURBO对涡喷发动机涡轮密封舱小气路中的复杂流场进行研究 ,计算中采用 Jameson的中心差分格式结合 Baldwin- Lomax湍流模型求解雷诺平均 N- S方程 ,得到了三维复杂流场中气体参数分布的详细结构和规律 ,具有较高的精度 ,为小气路中的故障的诊断提供数值依据

关键词: 涡轮喷气发动机;粘性流;湍流;流动分布;数值计算;故障分析

Abstract: A 3 D viscous flow program FINE/TURBO was used to solve the complex flow field of the secondary flow path in the turbine sealed cabin of a gas engine. The central difference scheme of Jameson and algebraic turbulence model of Baldwin Lomax were used. Detailed flow structures and parameters were showed. Seven different structure schemes were used in the calculation and the simulation results were compared each other. The results show that the dimension of the sealed ring gap is the critical parameter to the flow rate distribution. The solutions can provide substantial numerical data for the failure diagnosis in the secondary flow path of gas turbine engine.

Key words: Turbojet engine;Viscous flow;Turbulent flow;Flow distribution;Numerical simulation;Fault diagnosis

徐旭,康顺,谭春青,张朝先. 涡喷发动机涡轮密封舱小气路流场数值计算[J]. 推进技术, 2000, 21(2): 29-32.