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Film Cooling from a Single Row of Compound Angle Holes at High Blowing Ratios
Published 1996-01-01“…Experimental results are presented which describe the development and structure of flow downstream of a single row of holes with compound angle orientations producing film cooling at high blowing ratios. This film cooling configuration is important because similar arrangements are frequently employed on the first stage of rotating blades of operating gas turbine engines. …”
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2
Film Effectiveness Downstream the Trenches with Tilted Target Wall
Published 2022-01-01“…Three trench geometries with the same exit area and tilt angles (the angle between the trench side- and top-wall) of 75°, 90°, and 105° degrees are tested for three blowing ratios of 0.5, 0.75, and 1.0, and the film effectiveness results are compared using the adiabatic pressure sensitive paint technique. …”
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Effect of Upstream Wake on Shower-Head Film Cooling
Published 1996-01-01“…All mass transfer runs were conducted on a blowing-type wind tunnel with a six-blade linear cascade. …”
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4
Detailed Film Cooling Measurements over a Gas Turbine Blade Using a Transient Liquid Crystal Image Technique
Published 2001-01-01“…This effect is stronger immediately downstream of injection holes. Film effectiveness is highest at a blowing ratio of 0.8 for air injection and at a blowing ratio of 1.2 for Co2 injection. …”
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Experimental Film Cooling Effectiveness of Three-Hole-Branch Circular Holes
Published 2021-01-01“…A three-hole-branch geometry for film cooling is proposed. Each branch is made up of a streamwise 30°-angled circular hole with a circular hole of the same diameter on each side of it. …”
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7
Film Cooling Optimization Using Numerical Computation of the Compressible Viscous Flow Equations and Simplex Algorithm
Published 2013-01-01“…The effect of film cooling parameters such as inlet velocity direction, lateral and forward diffusion angles, blowing ratio, and streamwise angle on the cooling effectiveness is studied, and optimum cooling parameters are selected. …”
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8
Film Cooling Effectiveness Data for Simple Injection Geometries: A Collection of Three-Axis Plots
Published 1994-01-01“…A three-axis plot of laterally averaged film cooling effectiveness versus blowing rate and versus dimensionless distance downstream is a sufficiently compact representation of film cooling effectiveness data for injection through a row of holes or two rows of holes to enable easy, global comparisons among a variety of data sets. …”
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9
Study of Natural and Accelerated Weathering on Mechanical Properties of Antioxidants Modified Low Density Polyethylene Films for Greenhouse
Published 2014-01-01“…The samples were extruded and blown into a film using twin-screw extruder and film blowing machine. …”
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10
Experimental Study of Two Rows Hybrid Film Cooling Holes Over Flat Plate Surface Using IR Technology
Published 2023-09-01“…Additionally, the better overall film cooling effectiveness in this study was achieved by the configuration of the hybrid holes at a blowing ratio of 0.5, which resulted in a film cooling effectiveness of 35.0% …”
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Effect of Turbulence Intensity on Cross-Injection Film Cooling at a Stepped or Smooth Endwall of a Gas Turbine Vane Passage
Published 2014-01-01“…Other parameters considered in the film cooling experiments include three inlet Reynolds numbers (9.20×104 , 1.24×105, and 1.50×105), three blowing ratios (0.5, 1.0, and 2.0), and three endwall conditions (smooth endwall and stepped endwall with forward-facing or backward-facing step). …”
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