期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：189
期号：4
页码：042030
DOI：10.1088/1755-1315/189/4/042030
语种：English
出版社：IOP Publishing
摘要：Taking a 600 MW steam turbine as the research object, the three-dimensional numerical simulation of the complex internal structure of the exhaust passage is performed using Fluent software. By establishing three models, the influence of low pressure heater, low pressure extraction steam pipe and small machine exhaust on aerodynamic performance of exhaust cylinder is simulated respectively. The results show that the three components of the extraction pipeline, the low-pressure heater, and the exhaust of the small machine have a significant influence on the aerodynamic performance of the throat, causing a low-speed vortex in the flow field and severely destroying the homogeneity of the flow field, resulting in a he reduction of the heat transfer coefficient. Among them, the exhaust of the small machine has the greatest influence on the uniformity of the flow field at the outlet of the condenser, and further analysis and research are needed.
Loading...
