Numerical Investigation of Pneumatic Regulating on Low-Pressure Guide Vane

Abstract:

In order to reduce the turbine flow, injecting an airstream into the mainstream of the low-pressure turbine from the casing. A CFD analysis has been carried out to study the impact of jet parameters (jet position, Angle, flow rate and velocity) to the turbine flow. The calculation results show that when the low-speed region caused by the jet flow locates at the throat the flow regulating effect is the most obvious. In additional, when the jet is against the main stream or with a big flow rate, the turbine flow regulation is better, but the loss efficiency of the turbine will be significantly increased. The jet Mach number has little influence on the effect of flow regulation.

• Periodical: Applied Mechanics and Materials (Volume 733)
• Pages: 554-557
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.733.554
• Online since: February 2015
• Authors: Ya Jie Qin*
• Keywords: CFD, Pneumatic Regulation, Variable Cycle Engine

References

[1] Fang Changde, Variable Cycle Engine, Gas Turbine Experiment and Research, 2004, 17(3): 21-25. Reference to a book.

[2] Latimer R J, Variable Flow Turbines, AGARD CP-205, (1977).

[3] Stanley M N, John F K, Two-dimensional Cascade Test of a Jet-flap Turbine Rotor Blade, NASA TM-X-2183, (1971).

[4] Yang Yang. Pneumatically Adjust the Turbine Flow. Beijing: BUAA, (2009).

[5] Fu Chao. Some Technical Problems in Advanced Turbine's Aerodynamic Design [D]. Beijing: BUAA, (2010).