Numerical Analysis of Gas Turbine HP Stage Blade Cooling with New Cooling Duct Geometries

Kini , Chandrakant R and Shenoy, Satish B and Sharma, Yagnesh N (2012) Numerical Analysis of Gas Turbine HP Stage Blade Cooling with New Cooling Duct Geometries. International Journal of Earth Sciences and Engineering, 5 (4). pp. 1057-1061. ISSN 0974-5904

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Abstract

The turbine blades of HP stage are rather small to incorporate the blade cooling techniques efficiently. The current turbine entry temperature levels in advanced gas turbines exceed the melting point of the blade. So, along with high temperature material development, a novel cooling scheme must be developed for safe operation of HP stage. An effort has been made in this paper to computationally analyze the HP stage turbine blade for effective cooling using new duct within the blade. An helicoidal duct with circular cross-section has been analyzed corresponding to different duct diameters and pitch length of the helix. It is found from the analysis that helicoidal cooling duct with larger diameter and with lower pitch length provides a vastly improved cooling compared to straight ducted cooling ducts for the HP stage.

Item Type: Article
Uncontrolled Keywords: HP Stage Turbine Blade Cooling, Innovative Cooling Geometries
Subjects: Engineering > MIT Manipal > Aeronautical and Automobile
Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 05 Aug 2013 08:52
Last Modified: 05 Aug 2013 08:52
URI: http://eprints.manipal.edu/id/eprint/136415

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