基于整机变维度仿真的压气机导叶调节规律优化方法

In order to address the issue of selecting adjustment laws for multistage compressor guide vane in the whole engine environment, an object-oriented and flexible modeling of zero-dimensional (0D) simulation program for whole-engine performance was developed. A three-dimensional (3D) computational fluid dynamics (CFD) simulation model for multistage compressors was constructed, and an integrated whole-engine 0D-3D zooming coupling simulation model was established to study the zooming coupling simulation method for the whole engine. The E3 high bypass ratio turbofan engine and its 10-stage high pressure compressor (HPC) were taken as the object and analyzed. The results show that the zooming coupling simulation method has higher accuracy compared with the empirical 0D method. The zooming technique based on the iterative coupling method is related to the selection of initial characteristic maps. The characteristic maps calculated by CFD only need 3-7 iterations to achieve a relative error below 0. 2% for corrected mass flow, efficiency and guide vane opening, which can obtain convergence results faster and more accurately.