Results 11 to 20 of about 238,417 (269)
The Journal of the American Board of Family Medicine, 2005 Rosa Torres (not her real name) was a 72-year-old woman with advanced congestive heart failure, chronic obstructive pulmonary disease, and severe chronic pain caused by degenerative joint disease.
Lawhorne, Larry Wayne +2 more
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Applied Sciences, 2020 Due to the complexity of the internal flow field of compressors, the aerodynamic design and optimization of a highly loaded axial compressor with high performance still have three problems, which are rich engineering design experience, high dimensions ...
Song Huang +5 more
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Energies, 2023 Unsteady numerical simulations, coupled with the SST (Shear Stress Transport) k-ω turbulence model, were conducted to study the mixing-enhancement characteristics of the excited jet generated by the fluidic oscillator and the air tab in a single channel ...
Ming Li +7 more
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International Journal of Aerospace Engineering, 2021 In the present study, a numerical simulation was conducted to investigate the influence of surface roughness on the aerodynamic performance of a 1.5-stage highly loaded axial compressor at low Reynolds number.
Hongzhi Cheng +5 more
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Numerical Investigation on Mechanism of Swirling Flow of the Prefilming Air-Blast Fuel Injector
Energies, 2023 Prefilming air-blast atomizers are widely used in modern gas turbine combustors. Due to insufficient awareness of the coupling mechanism of multi-stage swirling flow in gas turbines, there is a lack of effective methods for flow field optimization in ...
Cheng Cao +7 more
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Collectives' Duties and Collectivization Duties [PDF]
Australasian Journal of Philosophy, 2013 Plausibly, only moral agents can bear action-demanding duties. This places constraints on which groups can bear action-demanding duties: only groups with sufficient structure-call them collectives-have the necessary agency. Moreover, if duties imply ability then moral agents (of both the individual and collectives varieties) can bear duties only over ...
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Unsteady Effects of Wake on Downstream Rotor at Low Reynolds Numbers
Energies, 2022 In a compressor, the periodic wake is an inherently unsteady phenomenon that affects the downstream flow conditions and loading distribution. Thus, understanding the physical mechanisms of these unsteady effects is important for eliminating flow losses ...
Lin Li +4 more
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Aerospace, 2022 A detailed numerical simulation of a transonic tandem fan stage was conducted, and the change rule of the flow structure inside the fan stage under the design and off-design conditions was discussed to determine the internal flow mechanisms.
Chuangxin Zhou +2 more
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Computational Investigation of Flow Control Methods in the Impeller Rear Cavity
International Journal of Aerospace Engineering, 2020 In typical median and small aeroengines, the air used to realize the functions such as cooling of turbine blades and disks, sealing of turbine cavities and bearing chambers, adjusting of rotating assembly axial load is normally drawn through the rear ...
Guang Liu +5 more
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Machines, 2023 This paper focuses on the dynamic internal flow in the integrated aggressive intermediate turbine duct (AITD) with different HPT wake numbers, using CFX Solver with dynamic Reynolds-averaged Navier–Stokes equations (RANS), the shear stress transmission κ-
Xiaoqing Ouyang +6 more
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