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http://dx.doi.org/10.3795/KSME-B.2006.30.4.328

Effect of Blade Tip Geometry on Heat Transfer Coefficients on Gas Turbine Blade Tips and Near Tip Regions  

Kwak Jae-Su (한국항공대학교 항공우주 및 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.30, no.4, 2006 , pp. 328-336 More about this Journal
Abstract
Detailed heat transfer coefficient distributions an two. types of gas turbine blade tip, plane tip and squealer tip, were measured using a hue-detection base transient liquid crystals technique.. The heat transfer coefficients an the shroud and near tip regions of the pressure and suction sides af the blade were also. measured. The heat transfer measurements were taken at the three different tip gap clearances af 1.0%, 1.5%, and 2.5% of blade span. Results shaw the overall heat transfer coefficients on the tip and shroud with squealer tip blade were lower than those with plane tip blade. By using squealer tip, however, the reductions af heat transfer coefficients near the tip regions of the pressure and suction sides were nat remarkable.
Keywords
Convective Heat Transfer; Gas Turbine; Turbine Blade Tip; Squealer Tip; Tip Leakage Flow; Transient Liquid Crystals Technique;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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