基于扩压因子流型的压气机快速性能预测算法

为快速、准确地获得压气机性能参数、完成压气机性能预测，实现压气机优化设计，基于流线曲率法，将扩压因子作为控制方程、损失模型、熵增修正模型及落后角模型中的关键参数，建立轴流压气机性能快速预测算法。利用该算法对某跨音速轴流压气机性能参数进行计算，并将计算结果与主流商业软件计算结果及试验数据进行对比。通过对比发现：该算法计算效率高，能够快速且较为准确地完成压气机整体性能和沿叶高方向流场参数的预测；计算范围广，在不同转速、不同流量等非设计工况下算法预测结果均与试验及数值模拟数据接近；所选取与完善的经验公式合理可靠，能够较好地描述压气机内部流动。

Fast Prediction Method for Compressor Performance based on Diffusion Factor Flow Patten

In order to obtain compressor performance parameters,complete the compressor performance prediction and realize the compressor optimization design quickly and accurately,a fast prediction algorithm for axial flow compressor performance was established based on the streamline curvature method,by using the diffusion factors as the key parameters in the governing equation,loss model,entropy generation correction model and the deviation angle model.The algorithm was applied to calculate the performance parameters of a certain transonic axial flow compressor,comparing the calculation results with the mainstream commercial software and the experimental data.By comparison,it is found that this algorithm has high computational efficiency,which can complete the prediction for the overall performance and spanwise flow field parameters of the compressor quickly and accurately.It has a wide calculation range,and the algorithm prediction results are all close to the experimental data and the numerical simulation data under the off design conditions of different rotation speeds and flow rates.The chosen and improved empirical equations are reasonable and reliable,which can describe the internal flow of the compressor well.