摘要
本文以平均截面处参数α_1、β_2、μ、和m=u_2/w_2cosβ_2及动叶出口处扭曲规律为变量,以设计工况内效率和总重量为目标。提出了一个带有多种约束条件的径—轴流式涡轮参数多目标优化方法。所求问题为两目标有约束(二十九个)多变量(六个)非线性规划问题。介绍了用于最优设计的数学模型,给出了各种流型下径—轴流涡轮的单目标和多目标优化分析的一些结果。计算表明,所提出的方法是有效且实用的。
This paper provides a multi-objective optimum design method for a radial-axial flow turbine stage. The method takes the parameters in mean radius, i. e. a1,bbbbb1,μ,u1=(n2/ w2)cosβ2, and the criteria of blade twist at the outlet of the blades as design variables, and selects the internal efficiency in the design conditions and the total weight of the turbine stage as objective functions. The model presented is a nonlinear multi-objective programming problem of two objective functions with 29 constrained functions and 6 variables. The mathematical model for optimization and some analytical results of single- and multi-objective optimization for a variety of twisted blades are also presented in this paper. The numerical results demonstrate the validity and effectiveness of the method.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
1989年第3期218-222,共5页
Journal of Aerospace Power
