...-Boelter correlation gas turbine heat transfer internal cooling serpentine passages thermochromic liquid crystal tomographic PIV flow field measurement heat transfer and film cooling The gas turbine engine is a reliable and versatile power source for various applications...

... internal cooling U-duct tapered U-duct ribbed duct computational fluid dynamics (CFD) heat transfer and film cooling The turbine inlet temperature (TIT) of modern power-generation gas turbines can be as high as 1600 °C with net thermal efficiency close to 45%. Efficiency of the Brayton cycle...

...Abbigail Y. Altland; Thomas M. Corbett; Karen A. Thole While additive manufacturing (AM) can reduce component development time and create unique internal cooling designs, the AM process also introduces several sources of variability, such as the selection of machine, material, and print parameters...

... a better performance with fewer pin-fin rows used. Email: sjouke.schekman@wits.ac.za 1 Corresponding author. Email: tong.kim@wits.ac.za 17 05 2023 20 05 2024 20 05 2024 17 06 2024 Graphical Abstract Figure heat transfer internal cooling perforated...

...Christopher Yoon; Elise M. Flachs; Molly E. Ellinger; David G. Bogard The overall cooling effectiveness for gas turbine airfoils is a function of the combined cooling due to internal cooling configurations and film cooling configurations. Typically, film cooling configurations are evaluated...

... of the complex cooling configuration was developed, and quantification of the increase in overall cooling effectiveness was performed in a 1X scale, high-speed facility using infrared thermography. This study produced a PDC AM process, capable of printing complex internal cooling schemes in 1X scale turbine...

.... Due to the simple design without moving parts and the high-frequency outlet flow, RDCs represent the most promising solution for integration in gas turbines [ 2 ]. heat transfer and film cooling RDC PGC liner internal cooling heat loads pressure drop convection 11 09 2023 07...

... International Mechanical Engineering Congress and Exposition , Boston, MA , Oct. 31–Nov. 6 , pp. 1175 – 1184 . [18] Saha , K. , Acharya , S. , and Nakamata , C. , 2013 , “ Heat Transfer Enhancement and Thermal Performance of Lattice Structures for Internal Cooling of Airfoil Trailing Edges...

.... Internal cooling structures include leading edge impingement cooling, U-shaped serpentine passage with/without turbulence ribs at blade mid-chord, and trailing edge pin fins. External cooling structures include film holes near the leading edge stagnation point, at the blade tip, and on the trailing edge...

... Email: lesley_wright@tamu.edu Email: jc-han@tamu.edu Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the J ournal of T urbomachinery . 12 09 2021 06 05 2022 06 05 2022 21 07 2022 internal cooling partial height strip...

... holes and blade shape, which change the secondary flow and flow non-uniformity of the internal cooling flow. This study conducted an experimental and numerical analysis to characterize the secondary flow and flow non-uniformity in a realistic internal cooling serpentine passage. Magnetic resonance...

...Matthew J. Horner; Christopher Yoon; Michael Furgeson; Todd A. Oliver; David G. Bogard Few studies in the open literature have studied the effect of thermal barrier coatings (TBC) when used in combination with shaped hole film cooling and enhanced internal cooling techniques. The current study...

...Wei He; Qinghua Deng; Guoying Yang; Zhenping Feng Leading-edge multi-channel double-wall design, a novel internal cooling structure, has been presented recently to enable higher overall cooling effectiveness with less penalty of coolant and pressure loss. Our previous work has proved the advantages...

...) were chosen based upon a range of common diameters seen in additive internal cooling literature [ 2 , 10 , 13 , 14 ]. The naming convention of individual coupons, as shown in Table 1 , provides information on the design diameter, circular channel shape, and build direction. Each coupon had the same...

... September 1, 2013; published online January 31, 2014. Editor: Ronald Bunker. 04 08 2013 01 09 2013 An experimental study is conducted on a simulated internal cooling channel of a turbine airfoil using angled grooves and combination of grooves-ribs to enhance the heat transfer from...

... data and validated CFD predictions in a wide range of working conditions that pertain to turbomachinery applications; namely, the internal cooling of the turbine blade's leading edge. The secondary flow structure induced by rotation turns out be more complex than the flow models commonly accepted...

.... Editor: David Wisler. 04 07 2012 15 07 2012 The pressure drop and heat transfer in a two pass internal cooling channel with two different bend geometries is experimentally studied with the goal of improving the thermal performance factor (TPF) in the coolant channel. The geometries...

... 8, 2012. Editor: David Wisler. 19 09 2011 10 01 2012 This paper presents a comparative numerical study of turbulent flow inside a two-pass internal cooling channel with different bend geometries. The goal is to find a geometry that reduces the bend related pressure loss...

...Sean Jenkins; Jens von Wolfersdorf; Bernhard Weigand; Tim Roediger; Helmut Knauss; Ewald Kraemer Measurements using a novel heat flux sensor were performed in an internal ribbed channel representing the internal cooling passages of a gas turbine blade. These measurements allowed...

... gas mixtures boundary layers channel flow Transient Heat Transfer Internal Cooling Turbine Many modern turbine blades are cooled by passing air through the blade before bleeding it to the surface to form cooling films. In the steady state the heat transferred to a the blade surface...