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| Influences of the Area Changes of the Trailing Edge Structure of the Guide on the Turbine Performance |
| MA Xiaofeng1, FENG Kaikai2, SONG Wenyan2 |
(1. Naval Equipment Department, Xi’an 710021, China;
2. School of Engine and Energy, Northwestern Polytechnical University, Xi’an 710021, China) |
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Abstract The fine structure of the trailing edge of the turbine guide leads to a change in the flow area of the flow
path due to machining errors, which in turn can cause a change in turbine performance. Numerical simulation method is
used for the trailing edge of slot cooling structure in a low-pressure turbine guide to study the flow field and performance
caused by the front and rear of the trailing edge (the area of flow passage in suction trailing edge is T1 and the area of flow
passage in pressure trailing edge is T2 ) area changes. The results show that in the design state, the throat of turbine is T2.
When T2 is bigger than that in the design state, the rate of work and mass flow of the turbine will become bigger, and the
turbine efficiency and turbine power will become smaller, but it has a nice T2 to let the rate of power comes to maximum
value. When T1 is bigger than that in the design state, the turbine efficiency and turbine power will increase.
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| [1] |
. [J]. Aeronautical Manufacturing Technology, 2016, 59(1/2): 128-131. |
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2016, 
