Applying GSH to a Wide Range of Experiments in Granular Media [PDF]
Granular solid hydrodynamics (GSH) is a continuum-mechanical theory for granular media, the range of which is shown in this paper. Simple, frequently analytic solutions are related to classic observations at different shear rates, including: (i)~static ...
Jiang, Yimin, Liu, Mario
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S-duct flow distortion with non-uniform inlet conditions. [PDF]
Migliorini M +3 more
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Numerical aeroacoustic analysis of propeller designs [PDF]
As propeller-driven aircraft are the best choice for short/middle-haul flights but their acoustic emissions may require improvements to comply with future noise certification standards, this work aims to numerically evaluate the acoustics of different ...
Barakos, George N. +2 more
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Noise generation by turbulence-propeller interaction in asymmetric flow [PDF]
This paper is concerned with a particular source of both broadband and tonal aeroengine noise, termed unsteady distortion noise. This noise arises from the interaction between turbulent eddies, which occur naturally in the atmosphere or are shed from the
Peake, N, Robison, RAV
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Indoor Air Quality Strategies for Air-Conditioning and Ventilation Systems with the Spread of the Global Coronavirus (COVID-19) Epidemic: Improvements and Recommendations. [PDF]
Elsaid AM, Ahmed MS.
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Natural and Anthropogenic Sources of Seismic, Hydroacoustic, and Infrasonic Waves: Waveforms and Spectral Characteristics (and Their Applicability for Sensor Calibration). [PDF]
Schwardt M +4 more
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Artificial intelligence for detecting keratoconus. [PDF]
Vandevenne MM +8 more
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B747/JT9D flight loads and their effect on engine running clearances and performance deterioration; BCAC NAIL/P and WA JT9D engine diagnostics programs [PDF]
Flight loads on the 747 propulsion system and resulting JT9D blade to outer airseal running clearances during representative acceptance flight and revenue flight sequences were measured. The resulting rub induced clearance changes, and engine performance
Martin, R. L., Olsson, W. J.
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Baseline Assumptions and Future Research Areas for Urban Air Mobility Vehicles [PDF]
NASA is developing Urban Air Mobility (UAM) concepts to (1) create first-generation reference vehicles that can be used for technology, system, and market studies, and (2) hypothesize second-generation UAM aircraft to determine high-payoff technology ...
Antcliff, Kevin +3 more
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A numerical model of saline density currents across a triple-bend sinuous submerged channel enclosed by vertical sidewalls is developed. The unsteady, non-Boussinesq, turbulent form of the Reynolds Averaged Navier-Stokes equations is employed to study ...
Burns, A.D. +3 more
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