作　　者： (施东波）; (王崇宇）; (张荻）; (谢永慧）; (吴君）; (马灿）;

机构地区： 西安交通大学能源与动力工程学院,西安710049

出　　处： 《热力透平》 2017年第3期153-157,共5页

摘　　要： 超临界二氧化碳动力循环具有效率高、设备尺寸小的优点。离心式压缩机是其重要的动力设备。根据循环系统的要求,采用大小叶片分流结构的通流,完成了1台功率为5MW的离心压缩机的设计。其后基于有限体积法和SSTk-ω湍流模型,并采用六面体结构化网格,对压缩机的气动性能进行了详细的数值分析。结果表明,所设计的压缩机总总效率为79.7%,总压比为2.09,满足设计要求。 Supercritical carbon dioxide power cycle has advantages of high efficiency and small device size, while centrifugal compressor is an important power equipment of the power cycle. According to the requirements of the circulatory system, the splitter blade structure was adopted and a 5 MW centrifugal compressor was designed. Then, based on the finite volume method and the SST k-ω turbulence model, the aerodynamic performance of the compressor was analyzed numerically with hexahedral structured grids. The results show that the totabtotal efficiency of the designed compressor is 79.7% and the total pressure ratio is 2. 09, therefore, the design requirements can be met.

关 键 词： 超临界二氧化碳 离心压缩机 分流叶片 热力设计 数值模拟