汽轮机级间抽汽对叶片气动性能影响的数值研究

摘要

对某超超临界汽轮机高压典型级与级间抽汽进行了数值模拟.通过详细流场分析,给出了有无抽汽时,叶片级气动性能的综合评价.根据具体流动特性和结构特点,提出有针对性的改进建议,以提高叶型气动性能,为以后的设计提供指导.%HP stages and extraction between stages of ultra-super critical steam turbine have been simulated.Overall evaluation about aerodynamics performance of blades is proposed through analyzing flow field with extraction.Based on flow characteristics and design feature,suggestions for improvement have been proposed in order to guide future design.