... for the aerodynamic and structural models, and surrogate-based optimization (SBO) capabilities. It is shown how the combination of a modular sequencing of the different models and the acceleration enabled by high-performance computing (HPC) and machine learning allows for a more advanced preliminary design...

... pressure rise and streamlines at mid-span for Case B at NS1 and NS2 As the mainstream flow became more tangential at inlet for NS2, it appeared to suppress the aerodynamic blockage from the corner separation across the entire span, which can be seen in the mid-span streamlines in Fig. 20...

... leakage is observed. These findings provide insight into the stator hub leakage-related penalties on the compressor aerodynamics efficiency. 1 Corresponding author. Email: klausmann@glr.tu-darmstadt.de Email: kilian@glr.tu-darmstadt.de Email: xiao.he2014@imperial.ac.uk Email...

... design speed. The reference configuration has been investigated experimentally on a novel test facility with multiphysical instrumentation. In this publication, the results of the first experimental campaign are presented with a detailed analysis of the aerodynamic performance and system symmetry...

... of a multistage axial turbo-reactor with various vaneless space lengths are conducted. This work conclusively demonstrates the robustness and flexibility of the aerodynamic design despite employing a uniform blade design. It is emphasized that the concept is tolerant to unsteady interstage turbulent disturbances...

... industry. Therefore, the design of high-performance heavy-duty industrial fans requires robust yet efficient solutions. The previous work indicates a high aerodynamic and aeroacoustic sensitivity concerning the specific position of the volute cutoff (tongue). This effect will be further investigated...

... , Paper No. AIAA 2012-3993. [5] Florea , R. V. , Voytovych , D. , Tillman , G. , Stucky , M. , Shabbir , A. , Sharma , O. , and Arend , D. J. , 2013 , “ Aerodynamic Analysis of a Boundary-Layer-Ingesting Distortion-Tolerant Fan ,” Proceedings of ASME Turbo Expo 2013...

...A. Hildebrandt; T. Ceyrowsky; J. Klausmann; K. A. Metz In the present paper, three centrifugal stages of high volume flow coefficient are compared to each-other regarding their aerodynamic performance in design point and off-design point conditions at different speed and inlet guide vane (IGV...

... flows upstream of the passage is expected to interact and change passage aerodynamics and, subsequently, mixing and transport of coolants. This study describes, experimentally, the aero-thermal interaction of cooling flows near the endwall of a first-stage nozzle guide vane passage. The test section...

...C. De Maesschalck; V. Andreoli; G. Paniagua; T. Gillen; B. Barker The optimization of the turbine rotor tip geometry remains a vital opportunity to create more efficient and durable engines. Balancing the aerodynamic and thermal aspects, while maintaining the mechanical integrity, is key to reshape...

... Roughness Impact on Secondary Flow and Losses in a Turbine Exhaust Casing ,” Proceedings of ASME Turbo Expo 2018 . ASME Paper No. GT2018-75541. [7] Deshpande , S. , Jonsson , I. , and Chernoray , V. , 2019 , “ Effect of Surface Roughness on Aerodynamic Performance of Turbine Rear...

..., the distortion at the fan face during cruise is close to radial. This article aims to devise and test a fan design philosophy that is tuned to this inflow distortion. Initially, a free-vortex fan design matched to clean inflow is presented. The effects of BLI on the aerodynamics of this fan are investigated...

... aerodynamics The possibility for unsteady blade row interaction to affect rotor film cooling performance has been recognized for some time, since the first measurements of film effectiveness on rotating blades showed discrepancies compared to predictions based on cascade and flat-plate measurements [ 1...

... of the turbine stage. Numerical simulations were conducted using the Rolls-Royce in-house code HYDRA, with and without inlet swirl. References 1 Qureshi , I. , Smith , A. D. , and Povey , T. , 2011 , “ HP Vane Aerodynamics and Heat Transfer in the Presence of Aggressive Swirl...

...M. Lorenz; A. Schulz; H.-J. Bauer The present experimental study is part of a comprehensive analysis accounting for heat transfer and aerodynamic losses on a highly loaded low pressure turbine blade with varying surface roughness. Whereas Part I focuses on heat transfer measurements at airfoil...

... further measurements at the airfoil midspan with different deterministic surface roughness are considered. Part I investigates the external heat transfer enhancement due to rough surfaces, whereas part II focuses on surface roughness effects on aerodynamic losses. A set of different arrays...

.... Although the average performances of the two blade tips are very similar, the full rim squealer exhibits marginally better film cooling effectiveness and slightly lower heat transfer coefficients. Comparison of the average aerodynamic and thermal performances of the squealer tips Full rim...

... unsteady. The unsteady flow interactions between the turbine and the exhaust system have a strong impact on the blade loading or blade aerodynamic force. This paper describes the unsteady flow interactions between a single-stage axial turbine and an exhaust system. The experimental and numerical studies...

...Marco Raciti Castelli; Ernesto Benini This paper presents a model for the evaluation of energy performance and aerodynamic forces acting on a small helical Darrieus vertical axis wind turbine depending on blade inclination angle. It consists of an analytical code coupled to a solid modeling...

... in Part I focused on the aerodynamics of the fully cooled turbine for a subset of the cases investigating two vane inlet temperature profiles (uniform and radial) and three different cooling levels (none, nominal, and high) for the high Reynolds number condition. This part of the paper focuses on the time...