轴流涡轮等密流通流设计方法
Axial Turbine Design Method with Uniform Flux along Radial Direction
李志 1刘艳 1杨金广1
作者信息
- 1. 大连理工大学能源与动力学院,大连 116024
- 折叠
摘要
针对轴流涡轮通流设计求解过程复杂和对设计经验依赖多等问题,提出了一种展向等密流通流设计方法.以E3涡轮为例论证该方法的优势.结果显示,通流设计与三维CFD模拟的参数展向分布基本一致.新设计方案通过调整密流的展向分布削弱了第一级动叶根部的二次流损失,进而使涡轮效率提升0.5％.提出的通流设计方法在提升计算稳定性、降低时间成本和提高涡轮气动性能等方面体现出一定的优势,能够切实应用于轴流涡轮设计.
Abstract
Turbine design is a complex and empirical process.To reduce the difficulty of turbine design,this paper proposed a method with uniform flux along radial direction and verified its ad-vantages by the design case of E3 turbine.The results show that the through-flow design is basically consistent with the spanwise distribution of parameters in 3D CFD simulation.The results show that the through-flow prediction is basically consistent with the 3D CFD prediction.And the new design scheme reduces the secondary flow loss at the root of the first rotor and increases the turbine efficiency by 0.5％.The proposed through-flow design method has some advantages in improving calculating stability,reducing time cost and improving turbine aerodynamic performance.
关键词
轴流涡轮/通流设计/S2流面/二次流/气动优化Key words
axial turbine/through-flow design/S2 flow/secondary flow/aerodynamic optimization引用本文复制引用
出版年
2024
NETL
NSTL
万方数据