The numerical simulation of steam wetness in variable working conditions for the last stage of LP-steam turbine
During the cause of expansion in turbines steam nucleates to become a two-phase mixture consisting of a very large number of extremely small droplets carried by the vapour. Turbine stages operating in a two-phase regime have a lower efficiency than those working on superheated steam and the turbine blades could be erosioned by the droplets. In order to investigated the influence of steam nucleation in different load, a three-dimensional nucleating wet steam flow with homogeneous nucleation in the last stage of an LP-steam turbine is simulated and analysised, including wetness faction distributions in different height of blade, wetness distribution and supercooling distribution in the channel of mid-height in different load.
numerical simulation homogeneous nucleation wetness fraction
Wang Shenglong Wang Haitao Yang Jin
School of Energy and Power Engineering Northeast Dianli University Jilin, China Inner Mongolia electric power research institute Hhht, China
国际会议
吉林
英文
24-27
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）