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RISHeat Transfer Measurements in an Annular Cascade of Transonic Gas Turbine Blades Using the Transient Liquid Crystal Technique
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Heat transfer measurements have been made in the Oxford University Cold Heat Transfer Tunnel employing the transient liquid crystal technique. Complete contours of the heat transfer coefficient ...
Large-Scale Testing to Validate the Influence of External Crossflow on the Discharge Coefficients of Film Cooling Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper discusses large-scale, low-speed experiments that explain unexpected flow-interaction phenomena witnessed during annular cascade studies into the influence of external crossflow on film ...
A Method for Correlating the Influence of External Crossflow on the Discharge Coefficients of Film Cooling Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An empirical means of predicting the discharge coefficients of film cooling holes in an operating engine has been developed. The method quantifies the influence of the major dimensionless ...
Effect of Radial Location of Nozzles on Heat Transfer in Preswirl Cooling Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates heat transfer in a rotating disk system using preswirled cooling air from nozzles at high and low radius. The experiments were conducted over a range of rotational ...
Aerothermal Investigation of Tip Leakage Flow in a Film Cooled Industrial Turbine Rotor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A numerical investigation of the flow and heat transfer characteristics of tip leakage in a typical film cooled industrial gas turbine rotor is presented in this paper. The computations were ...
Computational Prediction of Heat Transfer to Gas Turbine Nozzle Guide Vanes With Roughened Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The local Mach number and heat transfer coefficient over the aerofoil surfaces and endwalls of a transonic gas turbine nozzle guide vane have been calculated. The computations were performed ...
Free Vortex Theory for Efficiency Calculations From Annular Cascade Data
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes a new three-dimensional theory to calculate the efficiency or loss of nozzle guide vane annular cascades from experimental area traverse measurements of the compressible ...
The Influence of Film Cooling on the Efficiency of an Annular Nozzle Guide Vane Cascade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper examines the effect of aerofoil surface film cooling on the aerodynamic efficiency of an annular cascade of transonic nozzle guide vanes. A dense foreign gas (SF6 /Ar mixture) is ...
A Converging Slot-Hole Film-Cooling Geometry—Part 1: Low-Speed Flat-Plate Heat Transfer and Loss
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents experimental measurements of the performance of a new film-cooling hole geometry—the converging slot-hole or console. This novel, patented geometry has been designed to improve ...
A Converging Slot-Hole Film-Cooling Geometry—Part 2: Transonic Nozzle Guide Vane Heat Transfer and Loss
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the first experimental measurements on an engine representative nozzle guide vane, of a new film-cooling hole geometry, a converging slot-hole or console. The patented console ...