摘要
汽轮机排汽缸内扩压管排出的汽流翻转越过扩压管的内壁进入排汽缸,在上半部排汽缸内形成一个强度较大的漩涡,造成较大的排汽压损。运用Fluent模拟分析排汽缸内流场,结果表明,在上半部排汽缸内装设一列挡板,能有效地减小漩涡的强度,汽缸内流场得到改善,排汽压损减小35Pa。
Flow from the diffuser turns over across the inner wall of diffuser and then into the exhaust hood,forming a heavy fluid vortex below the outlet of diffuser,causing exhaust loss. By the simulation analysis of the fluid field in the exhaust hood with application of Fluent programme,it is figured out that a series of deflectors equipped in the upper half hood can decrease the intensity of the vortex,so that the flow field in the exhaust hood is improved and the exhaust pressure loss decreased by 35 Pa.
出处
《汽轮机技术》
北大核心
2014年第3期203-205,共3页
Turbine Technology
关键词
排汽缸
扩压管
挡板
排汽损失
漩涡
exhaust hood
diffuser
deflector
exhaust pressure loss
fluid vortex
