... environment is fulfilled. To examine the feasibility of the rig design in obtaining reliable heat transfer data, numerical simulations are conducted, verified and validated against experimental data. Numerical results demonstrate that the new rig is able to produce a mainstream gas of 589±1 K for a test time...

... of the segments. The error is less than 10% in most regions of the vane surface. Nusselt number segment fitting method heat transfer turbine vane transient liquid crystal Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United...

..., based on a sample of scanned HPTB castings and finished parts. This study showed that the aftchord shroud step flow is Q2D and resembles canonical step flow with enhanced heat transfer at the reattachment point. The shroud step sentencing correlation is tested on the platform steps in the simulation...

...Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United Kingdom GT2024-121839 EFFECTS OF LOCALIZED NON-GAUSSIAN ROUGHNESS ON HIGH PRESSURE TURBINE AERO-THERMAL PERFORMANCE: CONVECTIVE HEAT TRANSFER, SKIN-FRICTION...

... leakage flow and to analyze the effect of heat transfer and varying tip gap height. Three different flow topologies were categorized for relative tip gap sizes between 0.23% and 1.10% passage height. The contribution of the tip leakage flow to the overall losses could be quantified at each streamwise...

... becomes unnecessary, potentially even leading to reduced simulation accuracy. This investigation carries implications for cost reduction in the design process of thermal engineering applications involving high-Rayleigh-number natural convection flows. heat transfer turbulence natural convection...

... at the windings is highlighted yielding new fundamental insights into the local heat transfer mechanisms in hydro generators. CFD cooling electrical generator heat transfer thermal unsteady Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024...

... Abstract The increasing relevance of additive manufacturing has sparked interest in lattice and triply periodic minimal surfaces (TPMS) for lightweight, high-performance components. These structures have recently gained attention in thermo-fluid applications for enhanced heat transfer...

... considering FESSs as an alternative solution to battery storage systems. energy storage flywheel energy storage system windage loss heat transfer response surface method computational fluid dynamics Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024...

...-fin type) was numerically simulated using commercial software and the results were compared with the experiment. This was done to validate the numerical simulation was accurate enough to be used for future simulations. The heat transfer of the heat sink was enhanced by optimizing fin dimensions...

... effectiveness experimental heat transfer superposition Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United Kingdom GT2024-128042 INVESTIGATION OF THE EFFECTS OF GEOMETRY VARIATIONS ON THE PERFORMANCE OF AN ADJOINT OPTIMIZED FILM...

... Abstract In this paper, numerical simulation was conducted to investigate the flow and heat transfer characteristics in the channel with dumbbell pin-fin, and the channel with circular pin-fin is used as the baseline to evaluate the enhanced heat transfer performance of the dumbbell pin-fin...

... resulting in decreased heat transfer performance. To reduce the influence of crossflow, prior investigators have proposed using a corrugated wall type impingement structure. Although fundamental tests of simplified corrugated wall impingement structures have been conducted in the past to confirm the basic...

... Abstract A detailed knowledge of the flow structure and the heat transfer within blade-disc cavities is required for designing safe and efficient aero-engine compressors with a useful operating range. This paper presents the results from temperature field measurements obtained from the Multiple...

... temperature is driven by a conjugate heat transfer at Grashof numbers of order 10 13 . Such flows are further influenced by the heat and mass exchange with an axial through-flow of cooling air at low radius, where the interaction depends on the Rossby number and separation of the disc cobs. This paper...

... Abstract In this study, an elliptical pin-fins array is proposed to enhance the heat transfer coefficient (HTC) of turbine blade trailing edge channel. The friction coefficient (f) and HTC are obtained at the condition where inlet Reynolds number (Re) ranges from 10,000 to 70,000, rotation...

... Abstract This study focuses on investigating the heat transfer characteristics of boiling with liquid (subcritical) carbon dioxide impinging jet at identical enthalpy conditions, specifically examining the influence of varying operating pressures on its behavior. The experiments were conducted...

... Abstract During gas turbine operation, the blade tip region experiences high thermal load. Adequate cooling near the tip is necessary to reduce thermal stresses and extend blade lifespan. This study examined heat transfer distribution on the tip wall of internal cooling channels through...

.... The effusion cooling scheme has been formed to have dense staggered array with s/d = 9. Infrared Thermography (IRT) was employed to measure the liner metal temperature and overall cooling effectiveness values were identified. effusion cooling TBC heat transfer combustion Proceedings of ASME Turbo...

... which the flow structure in the cavity was dominated by a toroidal vortex. At sub-critical Ro, the flow structure for the inverted temperature gradient continued to be governed by buoyancy due to disc heat transfer. Momentum exchange with the axial throughflow and the gradient of circumferential...