A numerical simulation strategy for a compressor’s underlying axisymmetric characteristic and its application in body force model  

作　　者：Shijie LIU Tianyu PAN Qiushi LI 

机构地区：[1]School of Energy and Power Engineering,Beihang University,Beijing 100191,China [2]Research Institute of Aero-Engine,Beihang University,Beijing 100191,China [3]Key Laboratory of Fluid and Power Machinery,Ministry of Education,Xihua University,Chengdu 610039,China

出　　处：《Chinese Journal of Aeronautics》2024年第8期79-90,共12页中国航空学报（英文版）

基　　金：the National Natural Science Foundation of China(Nos.52322603 and 51976005);the Science Center for Gas Turbine Project,China(Nos.P2022-B-II-004-001 and P2023-B-II-001-001);the Fundamental Research Funds for the Central Universities,and Beijing Nova Program,China(Nos.20220484074 and 20230484479).

摘　　要：Accurate prediction of the aerodynamic response of a compressor under inlet distortion is crucial for next-generation civil aircraft,such as Boundary Layer Ingestion(BLI)silent aircraft.Therefore,research on the Body Force(BF)model plays a significant role in achieving this objective.However,distorted inlet airflow can lead to varying operating conditions across different spatial locations of the compressor,which may cause some regions to operate outside the stability boundary.Consequently,the accuracy of BF model simulations might be compromised.To address this issue,this paper proposes a numerical simulation strategy for acquiring the steady axisymmetric three-dimensional flow field of a compressor operating at low mass flow rates,which is known as the Underlying Axisymmetric Pressure Rise Characteristic(UAPRC).The proposed simulation accounts for two different rotor speeds of a transonic compressor and identifies initial positions in the flow field where deterioration occurs based on prior experimental investigations.Moreover,simulation results are incorporated into the BF model to replicate hub instability observed in experiments.Obtained results demonstrate that this strategy provides valid predictions of the UAPRC of the compressor,thereby addressing the limitations associated with the BF model.

关 键 词：Compressor partial instability Performance at low mass flow rates Underlying axisymmetric pressure rise characteristic Novel simulation strategy Body force model 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]