IGTC-65 Experimental Investigation of Blade Internal Cooling Methods Using Ribs and Fins(Session B-7 BLADE COOLING II)

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概要

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• Effective cooling schemes of turbine cooled blades are one of the key technologies for high temperature gas turbines to achieve higher performance and reliability with minimized cooling air consumption. In order to improve the blade internal cooling, various heat transfer enhancing devices using ribs and fins, separately (single kind of element) and in combination (different kinds of elements), are investigated experimentally. Three typical blade internal cooling schemes are evaluated: convection cooling along square- or triangular-sectioned ducts, impingement cooling of a concave surface by a row of circular jets, and impingement cooling of a flat surface with crossflow by an array of circular jets. Heat transfer data for each scheme as well as flow friction data for duct convection scheme are measured, and performance comparison is made. The test results for all schemes indicate that the cooling performance using combined elements, if installed optimally, is at least equal and generally higher than that using conventional separate elements.

• 公益社団法人日本ガスタービン学会の論文

著者

• Shizuya M.

  Mechanical Engineering Research Laboratory Hitachi Ltd.

• Kawaike K.

  Mechanical Engineering Research Laboratory Hitachi Ltd.

関連論文

• IGTC-48 AN EXPERIMENTAL INVESTIGATION OF PRESSURE LOSSES IN COOLING AIR SUPPLY SYSTEM FOR GAS TURBINE ROTOR
• IGTC-48 AN EXPERIMENTAL INVESTIGATION OF PRESSURE LOSSES IN COOLING AIR SUPPLY SYSTEM FOR GAS TURBINE ROTOR(Session B-2 Aerodynamics II (Turbomachinery))
• IGTC-65 Experimental Investigation of Blade Internal Cooling Methods Using Ribs and Fins(Session B-7 BLADE COOLING II)

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