摘要
本文针对空间核电源系统中高效、轻质的向心透平,采用一维设计结合三维数值计算的方法,设计出以氦氙混合气体为工质的向心透平。使用ANSYS CFX对向心透平的气动特点以及流场特性进行了数值模拟,分析了叶轮内部流动和损失分布情况,数值结果显示出所设计的向心透平有较好的气动性能,效率为84.4%,功率为618.3 kW,本文还展示了向心透平内部端壁损失、二次流损失及叶顶泄漏损失的分布情况。
In this paper,a high-efficiency,light-weight radial turbine,which is in a space nuclear power system,is designed by a method of one-dimensional design combined with three-dimensional numerical calculation.The helium-xenon mixture gas is selected as working fluid.ANSYS CFX is used to numerically simulate the aerodynamic characteristics and flow field.The internal flow and loss distributions in the radial turbine are analyzed.The numerical results show that this turbine has good aerodynamic performance.The efficiency is 84.4%and the power is 618.3 kW.The endwall loss,secondary flow loss and leakage flow loss distributions are also shown in this paper.
作者
徐森锫
罗磊
杜巍
王松涛
XU Sen-pei;LUO Lei;DU Wei;WANG Song-tao(School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)
出处
《节能技术》
CAS
2021年第2期138-143,共6页
Energy Conservation Technology
关键词
氦氙混合工质
向心透平
数值模拟
气动设计
helium-xenon mixture gas
radial turbine
numerical simulation
aerodynamic design
