... 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...

...] 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 , San Antonio, TX , June 3–7 , pp. 1...

...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...

... into consideration in order to study the aerodynamic behavior of the TRS. It is of interest to determine whether the numerical methodology will be able to capture the effects of the tip leakage flow, even though there is only a single point measuring the flow variables in the region affected by the tip leakage flow...

..., 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...

... aerodynamic adjustments that would best mitigate blade row interaction effects. A series of numerical experiments, where the upstream vane is modified, are used to vary the relative strength of wake and potential field interactions and distinguish their individual effects. The configuration...

... of the turbine stage. Numerical simulations were conducted using the Rolls-Royce in-house code HYDRA, with and without inlet swirl. 12 07 2011 28 07 2011 04 09 2012 04 09 2012 transonic turbine heat transfer aerodynamics HP rotor rotor casing combustor swirl Tighter...

...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...

... holes partially impinges onto the endwall. 02 07 2010 03 08 2010 19 07 2011 19 07 2011 aerodynamics blades cooling Mach number turbines turbulence The aerothermal design of advanced high and low pressure turbine blades has progressed significantly in the past...

... 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...

...C. W. Haldeman; M. G. Dunn; R. M. Mathison A fully cooled turbine stage is utilized to investigate the combined effects of turbine stage cooling variation and high-pressure turbine (HPT) vane inlet temperature profile on the aerodynamics and heat transfer of the turbine stage operating...

... with camber lines of arbitrary shape, and involving a three-dimensional computational fluid dynamics solver, this paper establishes a numerical aerodynamic optimization platform for the three-dimensional blades of axial compressors. The optimization in this paper mainly has four features. First, it applies...

... 2010 12 08 2010 30 06 2011 30 06 2011 aerodynamics blades heat transfer turbines The strip at the leading edge and the strip closest to the trailing edge are soldered to wire leads that connect to a dc power supply. The voltage drop across the heater strips is measured...

... 02 2009 24 03 2009 30 06 2011 30 06 2011 aerospace engines compressors engines exhaust systems nozzles aerodynamics radial turbines unsteady flow turbocharger quasi-steady double entry The modern turbocharger remains one of the best means to achieve...