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RISA Modern Review on Jet Impingement Heat Transfer Methods
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Jet impingement cooling is considered as one of the most effective heat transfer enhancement techniques. The primary mode of heat transfer enhancement is due to the flow stagnation. The effectiveness of jet impingement as ...
Detailed Heat Transfer Measurements of Jet Impingement on Dimpled Target Surface Under Rotation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present study investigates the effects of Coriolis force and centrifugal buoyancy force on heat transfer due to jet impingement on dimpled target surface (DT). Detailed heat transfer measurements were carried out using ...
Multipass Serpentine Cooling Designs for Negating Coriolis Force Effect on Heat Transfer: 45-deg Angled Rib Turbulated Channels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Rotation-induced Coriolis and centrifugal buoyancy forces result in significant modification of cooling characteristics of blade pressure and suction side internal walls. The nonuniformity in cooling, coupled with high-speed ...
Multi-Pass Serpentine Cooling Designs for Negating Coriolis Force Effect on Heat Transfer: Smooth Channels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The combined action of Coriolis and centrifugal buoyancy forces results in nonuniform heat transfer coefficient on pressure and suction side internal walls, hence leading to nonuniform metal temperatures and increased ...
Rib Turbulator Heat Transfer Enhancements at Very High Reynolds Numbers
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: High-pressure stage gas turbine blades feature serpentine passages where rib turbulators are installed to enhance heat transfer between the relatively colder air bled off from the compressor and the hot internal walls. ...
Three-Dimensional Transient Heat Conduction Equation Solution for Accurate Determination of Heat Transfer Coefficient
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Accurate quantification of local heat transfer coefficient (HTC) is imperative for design and development of heat exchangers for high heat flux dissipation applications. Liquid crystal and infrared thermography (IRT) are ...
Effect of Pin Fins on Jet Impingement Heat Transfer Over a Rotating Disk
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Many engineering applications consist of rotating components that experience high-heat load. Applications like the gas turbine engine consist of rotating disks and the study of heat transfer over such rotating surfaces is ...
Effect of Rotation on Detailed Heat Transfer Distribution for Various Rib Geometries in Developing Channel Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effects of Coriolis force and centrifugal buoyancy have a significant impact on heat transfer behavior inside rotating internal serpentine coolant channels for turbine blades. Due to the complexity of added rotation ...
Detailed Heat Transfer Distributions in Engine Similar Cooling Channels for a Turbine Rotor Blade With Different Rib Orientations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Detailed Nusselt number distributions are presented for a gas turbine engine similar internal channel geometry used for cooling a modern first stage rotor blade. The cooling design has one leading edge channel and a threepass ...
A Novel Transient Technique to Determine Recovery Temperature, Heat Transfer Coefficient, and Film Cooling Effectiveness Simultaneously in a Transonic Turbine Cascade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The study presented in this article provides detailed description about a newly developed experimental technique to determine three key convective heat transfer parameters simultaneously in hot gas path of a modern high ...