.... 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...

... as extracting air from the compressor does sacrifice some of the potential power output of the engine. The necessary amount of coolant air can be minimized through the careful design of cooling solutions employed within the turbine section of the engine. Internal cooling passages within modern turbine blades...

... 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...

... by the International Gas Turbine Institute (IGTI) of ASME for publication in the J ournal of T urbomachinery . 02 10 2020 04 01 2021 05 01 2021 08 04 2021 heat transfer internal cooling additive manufacturing surface roughness build direction direct metal laser sintering...

...; 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 the wall. The grooves...

..., 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 in the technical community to address the thermal behavior of these devices. An explanation of the rise and development...

.... 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...

...Yoji Okita; Hector Iacovides This paper presents computations of flow and heat transfer through passages relevant to those used to internally cool gas-turbine blades, using high-Reynolds-number models of turbulence. Three types of internal flows are first examined, which between them contain all...