英文文摘

关于汽轮机内湿蒸汽两相凝结流动的研究进展=Advances in the Study of the Wet Steam Two-phase Con-densation Flow Inside Steam Turbines[刊，汉] HAN Xu, LI Heng-fan, HAN Zhong-he （Education Ministry Key Laboratory on Power Plant Equipment State Monitoring and Control, North China University of Electric Power, Baod- ing, China, Post Code ： 071003 ）//Journal of Engineering for Thermal Energy ＆ Power. - 2016,31 （5）. - 1 - 6The wet steam non-equilibrium condensation flow inside steam turbines may result in a decline of the efficiency of the units and damage to blades due to water erosion. In view of the fact that a two-phase flow is far more complicated than a single-phase flow, it is difficult to measure its condensation characteristics through various tests. In such a case, the currently available three research methods were summarized through analyzing the latest research findings in the study of the wet steam two-phase flow theory both at home and abroad and its experimental study and the problems existing in the studies above-mentioned were also pointed out. Furthermore, the mechanism governing the condensation of a two-phase flow and the method for seeking its solutions were discussed and the merits and demer- its of several wet steam measurement methods were expounded. The research results show that the condensation and phase process is very complicated and the heat and mass transfer occurs at the micrometer level. Therefore,