基于二次函数的二次流损失模型研究  

Research of Secondary Flow Loss Model in Term of Quadratic Function

作　　者：李得英[1] 宋彦萍[1] 秦勇[1] 大山宏治 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001 [2]三菱重工业株式会社高砂制作所

出　　处：《工程热物理学报》2013年第10期1838-1841,共4页Journal of Engineering Thermophysics

基　　金：中央高校基本科研业务费专项(No.HIT.NSRIF.201173)

摘　　要：基于经典M-B模型,本文提出了一种以二次函数形式描述的二次流损失模型,并将其应用于某1,5级低压涡轮性能预测.结果表明:本文修正的M-B模型及经典M-B模型、A-M模型得到的级效率值与三维黏性计算结果误差分别为1.22%、2.41%、8.48%,体现了较高的预测精度;该修正模型可较好地捕捉叶栅上下端部因二次流动而导致的局部高损失区,并能较准确地计算叶栅气动参数分布。A secondary flow loss model in term of quadratic function based on the classic M-B loss model was developed in this paper, and was applied to predict the performance of a 1.5-stage low pressure turbine. Compared to the value of stage efficiency from the 3D calculation, the relative error is 1.22%, 2.41% and 8.48% respectively in the through flow calculation when the M-B_M model, the classic M-B model or A-M model was adopted, which infers that the M-B_M model has a much higher predicting accuracy the endwalls caused by the parameters more accurately. Besides, the M-B_M model can better capture the high-loss areas near secondary flow, and calculate the radial distribution of aerodynamic

关 键 词：二次函数 二次流损失模型 性能预测 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]