摘要
为研发高效变几何涡轮气动设计时的性能预测方法,本文提出了一种变几何涡轮特性一维预估模型。根据设计分析理论和经验模型,建立变几何涡轮特性一维预估模型,在此基础上,考虑涡轮部件变形对性能预测的影响并基于流热固耦合方法建立变几何涡轮叶片变形量一维计算模型,通过与特性一维预估模型进行双向耦合,建立基于热流固耦合的变几何涡轮特性一维预估模型。与三维仿真方法对比,结果显示:预估模型与三维仿真的全工况特性曲线趋势一致,其中总-总膨胀比最大相对误差为1.98%,等熵效率最大相对误差为2.30%。
To address the need for performance prediction methods in the development of highly efficient variable-geometry turbine aerodynamic designs,this paper proposes the one-dimensional(1D)prediction method of variable geometry turbine characteristics.Based on design analysis theory and empirical models,a 1D prediction model of variable geometry turbine characteristics is established.Considering the impact of turbine component deformation on performance prediction,a 1D computational model for blade deformation in variable-geometry turbines is developed using thermal-fluid-structural coupling methodology.Through bidirectional coupling with the characteristic prediction model,a comprehensive 1D variable-geometry turbine characteristics prediction model based on thermal-fluid-structural coupling is constructed.Compare the results with three-dimensional(3D)simulations method,the results show the prediction demonstrate consistent trends in full-operating-condition characteristic curves,with maximum relative errors of 1.98%for total-to-total expansion ratio and 2.30%for isentropic efficiency.
作者
郭桂友
张轲
贺志彬
张海
Gui-you Guo;Ke Zhang;Zhi-bin He;Hai Zhang(AECC Shenyang Engine Research Institute;Marine Equipment Project Management Center;AVIC Engineering Integrated Equipment Co.,LTD.;Harbin Engineering University)
出处
《风机技术》
2025年第3期20-28,共9页
Chinese Journal of Turbomachinery
基金
国家科技重大专项(2019-I-0007-0007)。
关键词
变几何涡轮
热流固耦合
一维预估
特性曲线
损失模型
Variable Geometry Turbine
Heat-fluid-structure Coupling
One-dimensional Prediction
Characteristic Curve
Loss Model
