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RISOptimum Jet to Plate Spacing of Inline Impingement Heat Transfer for Different Crossflow Schemes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A ninebynine jet array impinging on a flat plate at Reynolds numbers from 15,000 to 35,000 has been studied by the transient liquid crystal method. The spacing between the impingement plate and target plate is adjusted to ...
Numerical Study on Heat Transfer and Pressure Loss Characteristics of Swirl Cooling in Elliptical Tubes With Tangential Jet Inlets
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper presents a numerical study of the heat transfer, pressure loss, and flow characteristics of swirl cooling in elliptical tubes, which are compared to the counterpart of swirl cooling in a circular tube with a ...
Experimental and Numerical Heat Transfer Investigation of an Impinging Jet Array on a Target Plate Roughened by Cubic Micro Pin Fins1
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A generic impingement cooling system for turbomachinery application is modeled experimentally and numerically to investigate heat transfer and pressure loss characteristics. The experimental setup consists of an array of ...
Experimental and Numerical Study of Heat Transfer and Flow Friction in Channels With Dimples of Different Shapes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An experimental and numerical study was conducted to investigate the effects of dimple shapes on the heat transfer and flow friction of a turbulent flow over dimpled surfaces with different dimple shapes: spherical, teardrop, ...
Heat Transfer and Turbulent Flow Structure in Channels With Miniature V-Shaped Rib-Dimple Hybrid Structures on One Wall
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: An experimental and numerical study has been conducted on heat transfer and turbulent flow structure in channels with novel hybrid structures with miniature V-shaped ribs and dimples on one wall. One miniature V-shaped rib ...
Particulate Deposition Effects on Internal Swirl Cooling of Turbine Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Particulate deposition effects on flow and heat transfer in an internal swirl tube subjected to fly ash ingestion were investigated by constructing an unsteady simulation framework, in which a particle–wall interaction ...
Conjugate Heat Transfer Evaluation of Turbine Blade Leading-Edge Swirl and Jet Impingement Cooling With Particulate Deposition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Internal cooling structures for gas turbine engines are becoming more complicated to push the hot gas temperature as high as possible, which, however, allows particulates drawn into the coolant air to be more readily to ...
Hole Staggering Effect on the Cooling Performance of Narrow Impingement Channels Using the Transient Liquid Crystal Technique
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study examines experimentally the cooling performance of narrow impingement channels as could be castin in modern turbine airfoils. Full surface heat transfer coefficients are evaluated for the target plate and the ...
Effect of Varying Jet Diameter on the Heat Transfer Distributions of Narrow Impingement Channels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The development of integrally cast turbine airfoils allows the production of narrow impingement channels in a doublewall configuration, where the coolant is practically injected within the wall of the airfoil providing ...
Aerothermal Investigation of a Single Row Divergent Narrow Impingement Channel by Particle Image Velocimetry and Liquid Crystal Thermography
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Integrally cast turbine airfoils with wallintegrated cooling cavities are greatly applicable in modern turbines providing enhanced heat exchange capabilities compared to conventional cooling passages. In such arrangements, ...