压气机分层优化气动设计体系研究

基于压气机分层次气动优化设计思想,结合了优化算法、CFD(计算流体力学)技术与压气机气动设计程序,利用商业软件,建立了压气机气动优化设计平台,将气动优化设计思想融入到了压气机气动设计多个阶段,以实现压气机气动设计使性能最优化的目的.应用商业通用优化平台进行了轴流压气机一维、S2反问题气动优化设计,并采用NUMECA提供的全三维优化设计平台对压气机进行了全三维气动优化设计.计算结果表明:分层气动优化设计是提高压气机气动性能的有效手段,先进的优化算法在气动设计的各阶段都能够比传统设计手段更大限度地实现压气机性能的最优化.

A Study of an Aerodynamic Design System for the Layered Optimization of a Compressor

On the basis of a design idea involving layered aerodynamic optimization of compressors,in combination with an optimization algorithm and CFD (computational fluid dynamics) techniques as well as a compressor aerodynamic design program,the aerodynamic optimized design thought was fused into the multi-stages of the compressor aerodynamic design to achieve the aim of compressor performance optimization through an aerodynamic design.The above aim has been accomplished by using a commercial software and a compressor aerodynamic optimized design platform.By the use of a commercial general-purpose optimization platform,the authors hav e conducted an optimized design of one-dimensional and S2 reverse problem of axial flow compressors,and employed the full three-dimensional optimized design platform provided by NUMECA to conduct a full 3D (three dimensional) aerodynamic o ptimized design of the compressors.The calculation results show that the layered aerodynamic optimized design is an effective means for enhancing the aerodynamic performance of a compressor.An advanced optimization algorithm can invariabl y secure the performance optimization of compressors at various stages of aerodynamic design to a greater extent as compared with the traditional design method.