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International Journal of Turbomachinery, Propulsion and Power, Volume 3, Issue 4

2018 December - 2 articles

Cover Story: Leading edge impingement systems are increasingly being used for high-pressure turbine blades in gas turbine engines. The flow structure in such systems can be very complex, and high-resolution experimental data is required for engine-realistic systems to enable code validation and optimal design. This paper presents spatially resolved experimental heat transfer distributions for an engine-realistic impingement system for multiple configurations, with jet Reynolds numbers in the range of 13000–22000, to which RANS CFD simulations are then compared. Experimental results show variation in heat transfer distributions for different geometries; however, average levels are primarily dependent on the jet Reynolds number. CFD simulations match the shape of the distributions well, but with a consistent over-prediction of around 10% at heat transfer levels. View the paper.

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Article

1 Citations

4,266 Views

15 Pages

A Comparison of Experimental and Computational Heat Transfer Results for a Leading Edge Impingement System

Robert Pearce,
Peter Ireland,
Ed Dane and
Janendra Telisinghe

Int. J. Turbomach. Propuls. Power2018, 3(4), 23;https://doi.org/10.3390/ijtpp3040023

16 November 2018

Leading edge impingement systems are increasingly being used for high pressure turbine blades in gas turbine engines, in regions where very high heat loads are encountered. The flow structure in such systems can be very complex and high resolution ex...

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Article

12 Citations

6,078 Views

13 Pages

Preliminary Design Considerations for Variable Geometry Radial Turbines with Multi-Points Specifications

Pierre-Thomas Lauriau,
Nicolas Binder,
Sandrine Cros,
Mathieu Roumeas and
Xavier Carbonneau

Int. J. Turbomach. Propuls. Power2018, 3(4), 22;https://doi.org/10.3390/ijtpp3040022

8 November 2018

Radial turbines’ preliminary designs are usually carried out through some dimensionless approaches, such as the loading-to-flow-diagram and/or the blade speed ratio. In case of variable nozzle radial turbines, multi-points specifications must be cons...

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Int. J. Turbomach. Propuls. Power - ISSN 2504-186X

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