适用于氢储能及运输的大流量离心压气机进口级优化设计及特性分析OA北大核心CSTPCD

To address the challenge of enhancing the isentropic efficiency of hydrogen centrifugal compressor inlet stage,a one-dimensional optimization design program developed independently for the inlet stage of a hydrogen centrifugal compressor was used to carry out one-dimensional optimization design for the inlet stage in combination with BP neural networks and genetic algorithms.Based on the optimization results,a three-dimensional impeller model was constructed using 3D modeling software.Performance and flow field analyses were conducted under both design and variable working conditions using NUMECA software.The results indicate that the optimized hydrogen centrifugal compressor inlet stage achieves a pressure ratio of 1.071 and an isentropic efficiency of 86.34%under design conditions.The internal airflow remains stable without significant flow separation,ensuring a wide stable operating range and excellent aerodynamic performance.The research results provide valuable insights for the optimization design of the centrifugal compressor inlet stage.