The Influence of Upstream Flow Angle Variation on Intermediate Turbine Duct

Abstract:

Intermediate turbine duct represent the flow path between the high pressure and low pressure turbine. Caused by the complex flow mechanism, the outlet flow condition of the high pressure turbine is easily changed. Since the upstream flow condition from the high pressure turbine has a significant effect on the internal flow field of intermediate turbine duct, the study in the upstream condition is of high value. Through numerical simulation, the influence of upstream flow angle variation on intermediate turbine duct is observed. It is found that the main influence of the flow angle variation is near the hub side of the duct, and the quantitative result shows that a larger flow angle has a positive effect on the flow field and can reduce loss.

• Periodical: Applied Mechanics and Materials (Volumes 670-671)
• Pages: 705-708
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.670-671.705
• Online since: October 2014
• Authors: Yang Wang*
• Keywords: Flow Angle Variation, Flow Mechanism, Intermediate Turbine Duct

References

[1] Dominy R.G., Kirkham D.A. The influence of blade wakes on the performance ofinter-turbine diffusers. Journal of Turbomachinery 1996-118. 2.

DOI: 10.1115/94-gt-207

[2] Miller R.J., et al. The Effect of an Upstream Turbine on a Low-Aspect Ratio Vane. ASME Paper 2004- GT -54017.