...Alexander J. Wildgoose; Karen A. Thole; Erika Tuneskog; Lieke Wang The complex surface morphology and multiscale surface features inherent in additively manufactured (AM) components contribute to the overall flow characteristics and heat transfer of cooling passages. As the AM process and cooling...

...Niccolò Castelli; Umberto Sandri; Alessio Picchi; Bruno Facchini; Francesco Morante; Simone Cubeda The capabilities and the precision of additive manufacturing processes have been tremendously increased in the last years, and this trend is not expected to be close to an end. Researchers, in the gas...

...Alexander J. Wildgoose; Karen A. Thole Additive manufacturing (AM), particularly laser powder bed fusion, is growing the ability to rapidly develop advanced cooling schemes for turbomachinery applications. However, to fully utilize the design and development opportunities offered through AM...

...Serge Meynet; Alexis Barge; Vincent Moureau; Guillaume Balarac; Ghislain Lartigue; Abdellah Hadjadj In the last decade, progresses in additive manufacturing (AM) have paved the way for optimized heat exchangers whose disruptive design will heavily rely on predictive numerical simulations. However...

...Alexander J. Wildgoose; Karen A. Thole; Ramesh Subramanian; Lisa Kersting; Anand Kulkarni By leveraging the additive manufacturing (AM) platform, development time and costs for turbine component testing can be reduced relative to traditional investment casting. Surface roughness is a key...

...Lorenzo Mazzei; Riccardo Da Soghe; Cosimo Bianchini 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...

... as these alloys are prone to crack formation. In this work, specimens of IN738LC are fabricated on a Coherent Creator laser powder bed fusion (L-PBF) additive manufacturing (AM) equipment. Optical microscopy (OM), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and X-ray diffraction...

... components. In this field, structural topology optimization methods together with additive manufacturing techniques for high-resistant alloys are considered very promising tools, but their potentialities have not been deeply investigated yet for critical rotating components like new-generation turbine blades...

... outer casing of the probe is additively manufactured with a high-precision binder jetting technique. In terms of aerodynamic performance, the probe demonstrates high angular sensitivity up to ± 18 deg incidence angle in both directions. To evaluate the measurement accuracy of the newly developed FRAP-4S...

...Alexander J. Wildgoose; Karen A. Thole; Paul Sanders; Lieke Wang The use of additive manufacturing (AM) processes, such as direct metal laser sintering, provides the design freedom required to incorporate complex cooling schemes in gas turbine components. Additively manufactured turbine components...

... and Numerical Analysis of Additively Manufactured Coupons With Parallel Channels and Inline Wall Jets ,” ASME. J. Turbomach. , 141 ( 6 ), p. 61004 . 10.1115/1.4041821 [12] Stimpson , C. K. , Snyder , J. C. , Thole , K. A. , and Mongillo , D. , 2016 , “ Scaling Roughness Effects...

... relevant Mach number. An experimental investigation was conducted to study the SJ film cooling on a nozzle guide vane suction surface. A well-established additive manufacturing technique commonly known as stereolithography (SLA) was utilized to design a transonic, engine representative vane geometry...

... efficiency with less coolant consumption compared to film cooling, the fine pore structure and high porosity in transpiration cooling metal media always raised difficulties in conventional manufacturing. Recently, the rapid development of additive manufacturing (AM) has provided a new perspective to address...