跨声速轴流压气机非轴对称端壁造型优化设计

Design Optimization for a Transonic Compressor with Implementation of Non-axisymmetric Endwall Contouring

关键词:  非轴对称端壁  轮毂  优化设计  跨声速压气机 

Key words:  Non-axisymmetric endwall  Hub  Optimization design  Transonic compressor

摘要:

为探索非轴对称端壁提高跨声速轴流压气机性能的潜力,基于三维数值模拟优化平台,针对跨声速轴流压气机转子进行了非轴对称轮毂优化造型,深入分析了非轴对称轮毂造型对跨声速压气机流场结构及性能的影响机理。结果表明:优化造型后的非轴对称轮毂同时提高了该跨声速压气机的效率和压比,最高效率点效率提高0.31%,压比提高0.31%,并改善了压气机的变工况性能。 

Abstract:

In order to explore whether non-axisymmetric end wall can effectively improve the performance of transonic compressor, a transonic compressor rotor was optimized with the implementation of non-axisymmetric hub endwall contouring by three dimension numerical simulation optimization platform. And this paper described how the compressor flow field was influenced by the non-axisymmetric endwall. The investigation reveals that the non-axisymmetric hub endwall can improve both the efficiency and pressure ratio of the transonic compressor. At the highest efficiency condition, the efficiency increases by 0.31% and the pressure ratio increases by 0.31%. The off-design performance of the compressor is improved.