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Danmei Xie, Yang Shi, Wang-fan Li, You-min Hou, Xing-gang Yu, Hanshi Qin (2011)
Numerical simulation of wet steam two-phase flow in the last-stage stationary blade of super-critical steam turbine2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT)
- Publisher
- Springer Journals
- Copyright
- 2011 Higher Education Press and Springer-Verlag Berlin Heidelberg
- ISSN
- 2095-1701
- eISSN
- 1673-7504
- DOI
- 10.1007/s11708-011-0160-z
- Publisher site
- See Article on Publisher Site
Abstract
Abstract As a result of adopting saturation steam and long blade, problems of water erosion of last stage blade for steam turbine become more prominent. In order to improve the operation reliability and efficiency of steam turbine, it is necessary to investigate the nonequilibrium condensing wet steam two phase flow and the dehumidity method. A wet steam model with user defined function based on FLUENT software was investigated to simulate the steam condensing flow in the cascades. The simulation consequences show that the pressure variations in simulation depict a good agreement with the experiment data. On the basis of the discrete phase model simulation results and experiment data, the efficiency of existing dehumidity blade with suction slot was calculated. A new stationary dehumidity blade was designed to elevate the dehumidity efficiency: the efficiency in the suction surface was increased by 21.5%, and that in the pressure surface was increased by 12.2%.
Journal
"Frontiers in Energy" – Springer Journals
Published: Sep 1, 2011