...K. Sreekesh; D. K. Tafti; S. Vengadesan Internal cooling of the gas turbine blade is critical for the durability of the blade material. One of the ways to accomplish this is by passing coolant through serpentine passages roughened with surface elements to enhance the heat transfer. In the present...

... internal cooling gas turbine cooling heat transfer enhancement Rib turbulated internal cooling passages are used in gas turbine blades to remove heat, letting the engine operate at a higher firing temperature—and therefore at a higher efficiency. Aviation gas turbine blade designers use...

... for Small and Large Spacings ,” ASME Trans. J. Heat Transfer 0022-1481 , 109 , pp. 872 – 879 . Bunker , R. , and Metzger , D. E. , 1990 , “ Local Heat Transfer in Internally Cooled Turbine Airfoil Leading Edge Regions—Part I: Impingement Cooling Without Film Extraction ,” ASME J...

... With Smooth Walls ,” ASME J. Turbomach. 0889-504X , 113 , pp. 321 – 330 . Zhou , F. , Lagrone , J. , and Acharya , S. , 2004 , “ Internal Cooling in 4:1 AR Passages at High Rotation Numbers ,” ASME Paper No. GT 2004-53501. Kays , W. , Crawford , M. , and Weigand , B...

... and innovative cooling techniques have been studied. One of the most common techniques for blade cooling involves circulating coolant air through internal-cooling passages within the turbine blade. Maximizing the cooling efficiency of such passages and attempting...

... channels internal cooling near-wall Reynolds stress model chimera grids Gas turbine stages are being designed to operate at increasingly higher inlet temperatures to improve thermal efficiencies. Sophisticated cooling techniques must be employed to cool the components to maintain the performance...