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Passive shroud cooling concepts for HP turbines: experimental investigations

posted on 2023-06-08, 11:58 authored by Vasudevan KanjirakkadVasudevan Kanjirakkad, Richard Thomas, Howard Hodson, Erik Janke, Frank Haselbach, Chris Whitney
The cooling of rotor shrouds in the first stage of a high-pressure turbine requires special attention as flatter turbine inlet temperature profiles and more highly loaded blades result in increased thermal and mechanical stresses. The use of film cooling and/or internal convective cooling makes the rotor shroud heavier and oversized, restricting the maximum rotational speed. Alternative methods are therefore sought to achieve improved cooling of the shroud. This paper discusses the low speed experimental investigation of two `passive' cooling concepts known as `rail cooling' and `platform cooling'. It has been shown experimentally that the modified cooling method, namely the platform cooling, substantially improves the rotor shroud coolant distribution in the critical areas whilst employing significantly lower amounts of coolant.


Publication status

  • Published


American Society of Mechanical Engineers (ASME)

Page range


Event name

ASME Turbo Expo 2006: Power for Land, Sea, and Air

Event location

Barcelona, Spain

Event type


Event date

8-11th May, 2006

Book title

ASME Turbo Expo 2006: Power for Land, Sea, and Air, Volume 3: Heat Transfer, Parts A and B, Barcelona, Spain, May 8–11, 2006



Department affiliated with

  • Engineering and Design Publications


Paper No. GT2006-91250

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date


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