... with predictions also indicated that there was generally a very good match in the Mach numbers and metal temperatures for all the turbine blades and vanes. gas turbine aerodynamics cooling heat transfer testing validation film cooling operation Proceedings of ASME Turbo Expo 2021 Turbomachinery...

...-fed cases, suggesting that RANS is able to accurately model some of the important physics associated with leading-edge film cooling. film cooling shaped holes showerhead computational fluid dynamics heat transfer fluid mechanics gas turbine engines leading edge Proceedings of ASME...

... implying the existence of an optimum spanwise hole-to-hole spacing. Also, the minimum liner cooling effectiveness on the liner wall was found to be downstream of the impingement location, which is not observed in existing literature for experiments done under non-reacting conditions. heat transfer...

... hole to a shaped hole, which suggests cooling performance is insensitive to specific shaped hole details provided the exterior coolant flow is well-attached. film cooling shaped holes showerhead heat transfer fluid mechanics experimental gas turbine engines Proceedings of ASME Turbo...

...Abstract Abstract Few studies in the open literature have studied the effect of thermal barrier coatings when used in combination with shaped hole film cooling and enhanced internal cooling techniques. The current study presents RANS conjugate heat transfer simulations that identify trends...

... the pseudo-plenum caused much more severe separation in the holes than the impingement configuration did. film cooling shaped holes showerhead heat transfer fluid mechanics experimental gas turbine engines Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition...

... high and similar Nusselt number values. impinging jet crossflow heat transfer castellated wall Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-58895 HEAT TRANSFER MEASUREMENTS FOR ARRAY JET IMPINGEMENT...

...Abstract Abstract The goal of the present work is to investigate the effect of supply pipe position on the heat transfer features of various active clearance control (ACC) geometries, characterized by different jet-to-jet distances. All geometries present 0.8 mm circular impingement holes...

...Abstract Abstract It is well-known from the literature that surface roughness significantly affects friction and heat transfer. This is even more evident for additive manufactured (AM) components, which are taking an increasingly important role in the gas turbine field. However...

..., it is common during the transient operation to have portion of pump walls that achieve boiling conditions. The effect of boiling on the heat transfer between the solid and the fluid needs to be well characterized in order to correctly predict the pump metal temperature evolution and the necessary amount...

...Abstract Abstract Through the recent decades, many studies have focused on finding efficient methods to enhance the heat transfer performance in heat exchangers. Therefore, using porous media attracted many researchers, as it is such a simple, efficient, and low-cost technique in enlarging...

...Abstract Abstract Impact cooling is an effective way to enhance heat transfer, especially in the gas turbine blades. In the leading edge of the blade where has the high heat load, jet impingement cooling is widely used due to its high heat transfer characteristic in stagnation region. The focus...

...Abstract Abstract Impingement heat transfer is considered as one of the most effective cooling technologies that yields in high localized convective heat transfer coefficient. This paper studies different configurational parameters involved in jet impingement cooling such as, exit orifice shape...

... amount of cooling. The cooling ring is made through additive manufacturing, which opens the design space to tailored cooling geometries. Additively manufactured pin fin heat transfer enhancers are explored in this work to assess whether they hold any significant performance benefit over current...

... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-60276 CONJUGATE HEAT TRANSFER SIMULATION OF AN INDUSTRIAL GAS TURBINE BLADE WITH HARMONIC BALANCE METHOD Kim Zwiener Cassie Carpenter Justin Hodges Siemens Digital...

... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-58964 STUDY OF OIL FILM HEAT TRANSFER IN GAS TURBINE ENGINE BEARING CHAMBER Illia Petukhov, Taras Mykhailenko, Oleksii Lysytsia, Artem Kovalov National Aerospace...

... on the system thermal appear that need to be analyzed for both the oil and the fuel management is analyzed. system at steady-state and transient operating modes. The effects, which relate to the cold temperature, associated with Keywords: oil system, secondary flows, heat transfer, fuel freeze or wax point...

... and engine systems, operations, maintenance and storage. The fuel tanks could account for 8–10% of an aircraft’s operating empty weight, so designing them for the least added weight is of high significance. This paper describes the heat transfer model developed in the EU Horizon 2020 project that is used...

.... Firstly, the flow structure, heat transfer and friction characteristics of the novel channels under stationary and rotating conditions are numerically analyzed and compared in detail. Then the effects of cross bridge type/layout and dimple dimension/arrangement on the cooling performance are discussed...

... lessons learned. Flow and heat transfer tests are used to verify the impeller cooling design. Material properties are discussed to verify that the impeller can withstand high rotational stresses. additive manufacturing (AM) internal cooling heat transfer impeller gas turbine Proceedings...