基于多元非线性回归损失及落后角模型研究  

Research on Loss and Deviation Angle Model based on Multivariate Nonlinear Regression

作　　者：陶慧卿 徐宁 李润泽 姜斌[1] TAO Hui-qing;XU Ning;LI Run-ze;JIANG Bin(College of Power and Energy Engineering,Harbin Engineering University,Harbin,China,Post Code:150001;No.703 Research Institute of CSSC,Harbin,China,Post Code:150078)

机构地区：[1]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001 [2]中国船舶集团有限公司第七〇三研究所,黑龙江哈尔滨150078

出　　处：《热能动力工程》2022年第12期38-46,共9页Journal of Engineering for Thermal Energy and Power

基　　金：国家科技重大专项(2017-Ⅱ-0006-0019)。

摘　　要：针对传统经验叶栅损失及落后角模型缺少厚度分布修正项的问题,基于多元非线性回归分析方法对叶栅损失及落后角模型进行修正,采用修正模型分析了最大厚度位置系数影响下叶栅攻角损失特性、落后角与攻角特性曲线的变化情况。修正后的模型与CFD计算值拟合效果较好,叶型损失均方差从0.028降低至0.007,落后角均方差从1.898°降低至0.860°。修正后的模型的计算精度、适用范围得到提升。Aiming at the problem that the traditional empirical cascade loss and deviation angle model lacked the thickness distribution correction term,the cascade loss and deviation angle model was modified based on the method of multivariate nonlinear regression analysis.The article analyzed the changes of the cascade incident angle loss characteristic curve and the deviation angle and the incident angle characteristic curves under the influence of the maximum thickness position coefficient.The modified model fits well with the CFD calculated values.The mean square error of blade profile loss is decreased from 0.028 to 0.007,that of deviation angle is decreased from 1.898° to 0.860°.The calculation accuracy and application scope of the modified model are improved.

关 键 词：压气机 损失模型 落后角模型 雷诺数 厚度分布 

分 类 号：TK221[动力工程及工程热物理—动力机械及工程]