多级轴流压气机级间引气的仿真方法  

Simulation method of inter-stage bleeding of multi-stage axial compressor

作　　者：丁骏 郑健生 郑群[2] 隋永枫 史德润[1,3] 张宏伟 DING Jun;ZHENG Jiansheng;ZHENG Qun;SUI Yongfeng;SHI Derun;ZHANG Hongwei(Hangzhou Steam Turbine&Power Group Co.,Ltd,Hangzhou 310022,China;College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China;Hangzhou Steam Turbine Co.,Ltd,Hangzhou 310022,China)

机构地区：[1]杭州汽轮控股有限公司,浙江杭州310022 [2]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001 [3]杭州汽轮动力集团股份有限公司,浙江杭州310022

出　　处：《哈尔滨工程大学学报》2023年第4期580-586,共7页Journal of Harbin Engineering University

基　　金：中国博士后科学基金项目(2020M671672);浙江省科技计划(2022C01118)。

摘　　要：为了论证采用直接网格划分法或者源项法对级间引气技术进行数值研究的可行性,本文对比了2种不同的三维仿真方法。利用直接网格划分法对引气腔室进行简化,再通过对引气腔室网格划分将引气效果施加于压气机的主流道;源项法则省略了引气的二次通道,赋予引气口一定的引气流量。研究结果表明:由于计算原理的限制,源项法对引气口的模拟失真,无法预测出不均匀的引气效果和局部溢流。同时,源项法导致引气口上游的流量系数增大,造成了上游静叶的落后角减小,甚至于过偏转。由于上游静叶的过滤作用,源项法的流向影响范围有限,如若不是要对引气口上游的局部流场进行研究,源项法足以支撑级间引气对压气机总体特性的影响分析。In order to demonstrate the feasibility of using the direct meshing method or the source term method for numerical study of inter-stage bleeding technology,two different three-dimensional simulation methods were compared here,which uses the direct meshing method to simplify the bleed air chamber,and then applies the influence of bleed air to the main flow path by meshing the bleed air chamber.While the secondary passage of bleed air was omitted in the source term method,and a certain bleed flow mass was applied to the bleed slot.The research results show that,due to the limitation of the calculation principle,the flowfield near the bleed slot is distorted by the source term method.It is impossible to predict the uneven bleed effect and partial overflow.Meanwhile,the flow coefficient of upstream of the bleed slot is increased by the source term method,leading to decrease or even over deflection of deviation of the upstream stator.However,due to the filtering effect of the upstream stator,the streamwise influence of the source term method is limited.If it is not necessary to study the local flow field upstream of the bleed slot,the source term method is sufficient to support the analysis of the influence of inter-stage bleed air on the overall characteristics of the compressor.

关 键 词：工业燃机 轴流压气机 引气 数值仿真 源项法 网格划分 速度三角形 级间匹配 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]