汽轮机回热抽汽对下游流场影响的数值研究  

Numerical Investigation of the Effect of Regeneration Extraction Steam on Downstream Flow Field

作　　者：高俊鹏[1] 

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046

出　　处：《汽轮机技术》2010年第1期49-50,76,共3页Turbine Technology

摘　　要：针对某型机组高压缸的抽汽结构及抽汽点后叶片流场,采用N-S方程进行全周全三维叶片通道的数值模拟,研究结果表明,抽汽对其下游静叶栅气动参数沿周向和径向的分布均有较大的影响,并且该影响随着向抽汽点的趋近而增大,但抽汽对叶片型面静压分布影响较小,不会影响叶片的加载形式。For studying the structure and the downstream flow field of the extraction steam in high pressure cylinder, the NS equation was used to numerical simulating the full-wave total threee-dimensional cascade blade passage. The study results showed that the extraction steam would stronger affected on the aerocynamic parameters distribution ＇along the pitchwise and spanwise of the downstream stationary blade cascade, and the effection would be stronger when the section of the stationary blade cascade was more near the extraction point, but the effecion on static pressure distribution along the balde profile was little, ＇almost not effected the loading type.

关 键 词：数值模拟 回热抽汽 叶片 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]