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RISGas Turbine Heat Transfer: Ten Remaining Hot Gas Path Challenges
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The advancement of turbine cooling has allowed engine design to exceed normal material temperature limits, but it has introduced complexities that have accentuated the thermal issues greatly. ...
The Augmentation of Internal Blade Tip-Cap Cooling by Arrays of Shaped Pins
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The objective of the present study is to demonstrate a method to provide substantially increased convective heat flux on the internal cooled tip cap of a turbine blade. The new tip-cap ...
The Effects of Manufacturing Tolerances on Gas Turbine Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study presents a summary of the effects of manufacturing methods and processing steps upon the resulting thermal boundary conditions for typical highly cooled turbine airfoils. Specific ...
Heat Transfer and Friction Factors for Flows Inside Circular Tubes With Concavity Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Heat transfer and friction coefficients measurements have been obtained for fully developed, turbulent internal flows in circular tubes with six different concavity (dimple) surface array geometries. ...
Film Cooling Discharge Coefficient Measurements in a Turbulated Passage With Internal Crossflow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Gas turbine blades utilize internal geometry such as turbulator ribs for improved cooling. In some designs it may be desirable to benefit from the internal cooling enhancement of ribs as well ...
Augmentation of Stagnation Region Heat Transfer Due to Turbulence From a DLN Can Combustor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Heat transfer measurements have been made in the stagnation region of a flat plate with a circular leading edge. Electrically heated aluminum strips placed symmetrically about the leading edge ...
Effect of Tip and Pressure Side Coolant Injection on Heat Transfer Distributions for a Plane and Recessed Tip
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present study investigates the effects of coolant injection on adiabatic film effectiveness and heat transfer coefficients from a plane and recessed tip of a high pressure turbine first ...
Heat Transfer Augmentation Downstream of Rows of Various Dimple Geometries on the Suction Side of a Gas Turbine Airfoil
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Heat transfer coefficients were measured downstream of a row of shaped film cooling holes, as well as elliptical, diffuser, and teardrop shaped dimples, simulating depressions due to film coolant ...
Measurements and Predictions of Heat Transfer on Rotor Blades in a Transonic Turbine Cascade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Detailed heat transfer measurements and predictions are given for a power generation turbine rotor with 127 deg of nominal turning and an axial chord of 130 mm. Data were obtained for a set ...
Heat Transfer and Flow on the First-Stage Blade Tip of a Power Generation Gas Turbine: Part 1—Experimental Results
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A combined experimental and computational study has been performed to investigate the detailed distribution of convective heat transfer coefficients on the first-stage blade tip surface for a ...