摘要
为了实现对喘振流动现象的准确、快速预测,提出了一种基于三维体积力模型的离心压气机喘振预测方法,并在一款跨声速离心压气机上进行了应用,对以叶轮进口叶尖“回流泡”、喘振中的旋转失速,以及蜗壳诱发的非对称流动为代表的典型喘振流场结构进行了捕捉。通过与经试验校核的全三维非定常雷诺平均Navier-Stokes(URANS)方法进行对比表明:本文提出的离心压气机喘振预测方法,针对主要喘振流动特征的预测具备与全三维URANS方法相当的能力,同时计算时间约为全三维URANS方法的1/20。
To predict the three-dimensional and unsteady flow features of surge accurately and efficiently,a method of surge simulation for centrifugal compressors based on the three-dimensional bodyforce model was proposed.The method was further validated on a transonic centrifugal compressor.Typical flow field features like the development of the recirculation bubble at the impeller inlet tip,the existence of rotating stall during surge,and volute-induced asymmetry were captured.By comparing against the unsteady Reynolds averaged Navier-Stokes(URANS)results(validated by the experimental results),it can be shown that the proposed method is capable of predicting key features of surge,with the calculation time about 1/20 of the URANS method.
作者
曾翰轩
范腾博
温孟阳
魏杰
王钧莹
孙振中
郑新前
ZENG Hanxuan;FAN Tengbo;WEN Mengyang;WEI Jie;WANG Junying;SUN Zhenzhong;ZHENG Xinqian(School of Vehicle and Mobility,Tsinghua University,Beijing 100084,China;Institute for Aero Engine,Tsinghua University,Beijing 100084,China)
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2024年第2期182-192,共11页
Journal of Aerospace Power
基金
国家科技重大专项(2017-Ⅱ-0004-0016,J2019-Ⅰ-0011)。
