Enhanced quasi-three-dimensional transient simulation technique incorporating component volume effects for aero engine  

作　　者：Yuchen DAI Manxiang SONG Donghai JIN Xingmin GUI 

机构地区：[1]Aeroengine Simulation Research Center,School of Energy and Power Engineering,Beihang University,Beijing 100191,China [2]Jiangxi Research Institute of Beihang University,Nanchang 330096,China

出　　处：《Chinese Journal of Aeronautics》2024年第12期325-346,共22页中国航空学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.52376021).

摘　　要：Current transient analysis predominantly relies on zero-dimensional/one-dimensional tools,proficient at capturing aerothermodynamic variations across critical engine stations but insufficient for analyzing the internal flow field evolution during transients.Addressing this gap,the study presents an enhanced quasi-three dimensional(quasi-3D)transient simulation technique that integrates component volume effects,offering a significant leap from the preceding quasi-3D transient simulation method based on quasi-steady assumption.By embedding the component volume effects on density,momentum,and energy within the physical temporal dimension of the Navier-Stokes equations,the refined quasi-3D transient model achieves a closer representation of physical phenomena.Validation against a single-shaft turbofan engine’s experimental data confirms the model’s accuracy.Average errors for key performance indicators,including shaft speed,thrust,mass flow rate,and critical component exit temperature and pressure,remain below 0.41%,5.69%,2.55%,3.18%and 0.67%,respectively.Crucially,the model exposes a discernible temporal lag in the compressor outlet pressure and temperature response due to volume effects—previously unquantified in quasi-3D transient simulations.And further exploration of the meridional flow field emphasizes the consequential role of volumes in transient flow field evolution.Incorporating volume effects within quasi-3D transient simulations enhances engine modeling and is pivotal for precise transient analysis in engine design and optimization.

关 键 词：Engines Transient simulation Quasi-3D modeling Component volume effects Flow field evolution Transient performance analysis 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]