TS-78 Heat Transfer Measurements of an Integrated Cooling Configuration Designed for Ultra-High Temperature Turbine Blades(Session C-9 Turbine Cooling 1)

概要

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This paper demonstrates fundamental research on heat transfer characteristics inside of a cooling configuration designed for ultra-high temperature turbine nozzle. The cooling configuration concerned integrates impingement cooling and pin-fin cooling devices into one body. A large scaled model of the system is constructed from acrylic resin materials to measure the heat transfer on the surfaces of the target flat-plate and pin-fins. A transient measurement technique using thermochromatic liquid crystal (TLC) is employed instead of steady-state approaches due to complicated structure of the model. The experiments revealed that the impinged jets generate high heat transfer regions not only on the target surface but on the surfaces of the pins before being discharged from the cooling holes. This implies that the cooling configuration investigated in this study has a great potential to meet the goal with less cooling air consumption.
公益社団法人日本ガスタービン学会の論文
1999-11-14