Search

Your search keyword '"Yue, Guoqiang"' showing total 12 results
Start Over Author "Yue, Guoqiang" Search Limiters Full Text
12 results on '"Yue, Guoqiang"'

6. Advances in variable geometry turbine aerodynamic technology for gas turbines

Author

Yue Guoqiang, Jiang Yuting, Zheng Qun, Gao Jie, and Dong Ping

Subjects
Gas turbines, Variable (computer science), Acceleration, Computer Networks and Communications, Control and Systems Engineering, Computer science, Flow (psychology), Mechanical engineering, Point (geometry), Aerodynamics, Turbine, Variable geometry turbine
Abstract

The variable geometry turbine technology is one of the effective ways to improve acceleration and deceleration characteristics and low-working-condition performance for gas turbines. However, the design of variable geometry turbines is very difficult, and its design point efficiency is always lower than that of fixed geometry turbines. Moreover, regardless of whether the variable vane is open or closed, the turbine efficiency is significantly reduced, which partially offsets the gas turbine cycle benefits caused by turbine variable geometry. In order that the turbine variable geometry technology can be successfully applied to marine and other gas turbines, the research on the high-efficiency variable geometry turbine aerodynamic technology naturally has very realistic significance of national defense and important engineering application prospects. The development of the research about gas turbine variable geometry turbine aerodynamic technology is reviewed in three aspects: variable geometry turbine characteristics, variable geometry turbine endwall flow mechanisms and loss control as well as variable geometry turbine design features. Besides, the existing issues for variable geometry turbine researches are systematically summarized, and the key trends and future research priorities regarding gas turbine variable geometry turbine aerodynamic technology are presented.

Published
2018

8. Cascade experiment and analysis on blade profile of modular high temperature gas‐cooler reactor compressor.

Author

Yuan, Ze, Zheng, Qun, Yue, Guoqiang, and Jiang, Yuting

Subjects
FAST reactors, HIGH temperatures, MODULAR construction, PROPERTIES of fluids, FLOW visualization, BOUNDARY layer (Aerodynamics), COMPRESSORS
Abstract

Summary: Modular high‐temperature gas‐cooled reactor power station (MHTGR) is the most promising configurations for fourth‐generation nuclear technology. Aiming at the low accuracy of the performance prediction of MHTGR compressor, the paper intends to provide an experimental basis to have deep comprehension about the nexus of loss, passage structure and working conditions, including surface flow visualization, five‐hole probe measurement at the outlet section and surface pressure measurements under different conditions (blade camber angle, incidence angle). The experimentally measured data and images give a deep insight into the influence of blade camber and incidence on the flow structure, loss and blade loading. The vortex system is mainly shaped by the action of the pressure field. When the flow turning angle is large, the effect of the working fluid properties may be inconspicuous on the overall loss of the flow, rather than the tremendous impact on the boundary layer friction loss of attached flow as in the small blade chamber angle passage. For different vortices, the effect of each factor, which may cause losses, is also wax and wane. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results