Results 61 to 70 of about 4,545 (167)

Applying GSH to a Wide Range of Experiments in Granular Media [PDF]

open access: yes, 2014
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
core   +1 more source

S-duct flow distortion with non-uniform inlet conditions. [PDF]

open access: yesProc Inst Mech Eng G J Aerosp Eng, 2023
Migliorini M   +3 more
europepmc   +1 more source

Numerical aeroacoustic analysis of propeller designs [PDF]

open access: yes, 2018
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
core   +1 more source

Noise generation by turbulence-propeller interaction in asymmetric flow [PDF]

open access: yes, 2014
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
core   +2 more sources

Artificial intelligence for detecting keratoconus. [PDF]

open access: yesCochrane Database Syst Rev, 2023
Vandevenne MM   +8 more
europepmc   +1 more source

B747/JT9D flight loads and their effect on engine running clearances and performance deterioration; BCAC NAIL/P and WA JT9D engine diagnostics programs [PDF]

open access: yes
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.
core   +1 more source

Baseline Assumptions and Future Research Areas for Urban Air Mobility Vehicles [PDF]

open access: yes
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
core   +1 more source

A unifying computational fluid dynamics investigation on the river-like to river-reversed secondary circulation in submarine channel bends

open access: yes, 2011
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
core   +1 more source

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