... such as heat transfer coefficient correlations, and insufficient research studies about the mechanisms controlling heat transfer processes, are hindering its practical realization for key energy and cooling systems. The overall objective of this study is to extend fundamental knowledge about heat transfer...

... turbine experimental testing heat transfer aerodynamics cooling combustor turbine interaction Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-81945 A REVIEW OF HIGH-SPEED ROTATING HP TURBINE HEAT...

... of electrical machine under temperature constraints of stator winding, lumped thermal network is established to derive the requirement of heat transfer coefficients of the cooling fin. Then, from engineering feasibility, three different cooling fin designs including straight type, arc-shape type and airfoil...

... liftoff and increased film cooling effectiveness in row 2 by 65%. However, at low MFRs, increasing the density ratio reduced film cooling effectiveness in row 2 by 60%. Keywords: endwall film cooling, heat transfer, transonic, annular cascade, gas turbine. NOMENCLATURE A Area a Polynomial coefficient Cax...

..., a higher pressure drop consistently resulted in increased performance while higher flow speed resulted in reduced overall cooling performance. effusion cooling heat transfer pressure drop combustion gas turbine Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference...

... SI (sharp inlet). film cooling shaped holes heat transfer fluid mechanics experimental thermal field adiabatic effectiveness optimization gas turbine engines Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam...

... Abstract Conjugate heat transfer (CHT) analyses were conducted to validate the accuracy of numerical method in the prediction of aerodynamic and thermal performance of the film cooled C3X vane. The effect of inlet preswirl on the film cooling performance of the vane surface was investigated...

... Abstract The goal of the present work is to investigate the effects of target plate temperature on heat transfer features of representative active clearance control (ACC) geometries presenting 0.8 mm circular impingement holes arranged in a single row pattern. The jets generated by such holes...

... Abstract Flow and heat transfer in axial compressor disc cavities involve strong interaction of axial throughflow at the disc bores with centrifugal buoyant flow in the cavities. This paper presents large eddy simulation (LES) of flow and heat transfer in rotating cavities with a heated shroud...

...) was utilized to study the turbulent heat transfer of supercritical methane in a horizontal pipe under forced convection. The results show that the thermo-physical properties of the working fluid change rapidly under high heat flux conditions, which leads to a non-uniform distribution of wall temperature...

... with dimple/protrusion/pin fin is proposed to increase the heat transfer and decrease the blade surface temperature in the trailing region. This paper numerically investigated the conjugate heat transfer characteristics in a vane blade with different dimple/protrusion/pin fin configurations for trailing...

... cascade rig for high-speed tip heat transfer research was developed. Both the design method and the rig performance are presented. Different from existing design method to match two-dimensional blade loading, this study shows there are other design flexibilities, such as assist blade tip gap, tailboard...

... and turbine blades made entirely by AM. Despite that, the effects of the increased surface roughness on friction and heat transfer are not fully understood yet and this hinders the design process demanding further characterization by means of experimental tests. Also the exploitation of CFD simulations...

..., such as the correlation between the velocity and the heat transfer coefficient fields. In present study, both the POD method and the EPOD method are applied and compared. The POD method allows to visualize the main modes in terms of velocity, temperature, and heat transfer coefficient fluctuations. With the help...

... Abstract In this work, the effect of spanwise deflection of a rotating smooth U-channel on flow and heat transfer characteristics is investigated through numerical simulation. Seven deflected U-channel with different angles are adopted, including α = 90°, 60°, 30°, 0°, −30°, −60°, −90...

... Abstract In the present study the effects of ribbed and grooved walls of swirl cooling chamber on heat transfer and fluid flow characteristics are investigated. This study presents ten roughened wall shapes that are compared with a smooth wall in a swirl cooling chamber. The roughened wall...

... Abstract Additive Manufacturing (AM) in turbine technology enables the manufacture of complex and detailed shapes such as optimized cooling channel designs. However, the AM components are usually produced with high surface roughness. The ability to predict the pressure loss and heat transfer...

... Abstract In high-pressure turbines, there is a large difference in temperature between the mainstream and the turbine blade surface. Most of the turbine blade tip heat transfer researches were conducted under the assumption that the Over-Tip-Leakage (OTL) flow field is independent of the wall...

... Abstract In this study, the heat transfer characteristics in a rotating lateral outflow trapezoidal channel with pin-fins, which is a typical model of the internal cooling passage in a turbine blade, were experimentally investigated under the Reynolds number range of 10,000–80,000, rotating...

... consumption. This paper gives an overview of the design considerations and validation for a technology upgrade of an Ansaldo Energia heavy-duty gas turbine first stage stator heat shield. The heat transfer of the heat shield surface flow is influenced by the complex flow pattern that is created...