叶栅内湿蒸汽自发凝结流动的数值计算方法研究  

Numerical Calculation Method Study on Wet Steam Flow with Spontaneous Condensation in Cascade

作　　者：侯宪科 鞠凤鸣[2] 

机构地区：[1]通用电气-哈动力-南汽轮能源服务(秦皇岛)有限公司,秦皇岛066001 [2]哈尔滨汽轮机厂有限责任公司,哈尔滨150046

出　　处：《汽轮机技术》2014年第2期91-94,共4页Turbine Technology

摘　　要：在双Euler型、有限体积框架下发展了湿蒸汽平衡/非平衡相变凝结流动的数值方法。以Bakhtar试验叶栅为研究对象,结合试验数据,分析比较了两种计算方法下该叶栅内多工况的自发凝结流动。结果表明,双Euler型的非平衡相变计算方法能较为准确地模拟Bakhtar试验叶栅内在亚音速、音速、跨音速等多种流态下的自发凝结流动,而双Euler型平衡相变方法计算的湿度结果是一个伪结果。The numerical methods of equilibrium/non-equilibrium phase change condensate flow of wet steam were developed under the dual Euler type, finite volume framework. Took the Bakhtar cascade as study object, combined with experimental data, spontaneous condensation flow under different conditions in this cascade was analyzed. The results show that the non-equilibrium phase change calculation method in the dual Euler type can accurately simulate the spontaneous condensation flow under subsonic, sonic, transonic flow pattern in the Bakhtar test cascade, while the moisture result obtained by the equilibrium phase transition method in dual Euler-tvoe was a vseudo result.

关 键 词：汽轮机 湿蒸汽 凝结流动 数值模拟 

分 类 号：TK47[动力工程及工程热物理—动力机械及工程]