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RISAn Experimental and Numerical Investigation on the Effects of Aerothermal Mixing in a Confined Oblique Jet Impingement Configuration
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An investigation to characterize the effect of entrainment in a confined jet impingement arrangement is presented. The investigated configuration shows an impingementcooled turbine blade passage and holds two staggered ...
Application of the Transient Heat Transfer Measurement Technique in a Low Aspect Ratio Pin Fin Cooling Channel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study investigates on heat transfer enhancement in pin fin cooling channels. Experiments are conducted in a staggered pin fin array consisting of 15 rows. Heat transfer measurements are conducted in the pin fin cooling ...
Combined Experimental/Numerical Method Using Infrared Thermography and Finite Element Analysis for Estimation of Local Heat Transfer Distribution in an Internal Cooling System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the present study a method for estimating local heat transfer distributions of internal cooling systems is described. Experimental data and finite element analysis are applied for this method. The investigations considered ...
Application of the Transient Heat Transfer Measurement Technique Using Thermochromic Liquid Crystals in a Network Configuration With Intersecting Circular Passages
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present study deals with the application of the transient thermochromic liquid crystal (TLC) technique in a flow network of intersecting circular passages as a potential internal turbine component cooling geometry. The ...
Heat Transfer Measurements Using Multiple Thermochromic Liquid Crystals in Symmetric Cooling Channels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The transient thermochromic liquid crystal (TLC) method is applied to determine the distribution of the local heat transfer coefficients using a configuration with parallel cooling channels at an engine-relevant Reynolds ...
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, ...
The Effects of Ribs and Tip Wall Distance on Heat Transfer for a Varying Aspect Ratio Two Pass Ribbed Internal Cooling Channel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Internal cooling channels with differing aspect ratios are typically found in gas turbine blades due to the varying thickness of the blade from the leading to trailing edge. These serpentine passages often contain several ...
Improved Accuracy in Jet Impingement Heat Transfer Experiments Considering the Layer Thicknesses of a Triple Thermochromic Liquid Crystal Coating
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper examines the applicability of a triple layer of thermochromic liquid crystals (TLCs) for the determination of local heat transfer coefficients using the transient liquid crystal (LC) technique. The experiments ...