Results 91 to 100 of about 4,674,421 (280)

Aerodynamics of vortex ingestion for aero-engines [PDF]

open access: yes, 2013
The potential impact of inlet flow distortion on the stability and performance of aircraft engines remains a key concern for engine-airframe integration. Current and future configurations, such as Unmanned Combat Air Vehicles (UCAVs), and possible civil
McLelland, Grant
core   +3 more sources

Point-vortex model for Lagrangian intermittency in turbulence

open access: yesPhysical Review E, 2009
Experiments have shown that Lagrangian statistics in turbulent flows display Gaussianly distributed velocity values and non-Gaussianly distributed velocity differences or accelerations. Coherent flow structures in the form of vortices have often been proposed to play an important role in this behavior.
Rast, Mark Peter, Pinton, Jean-Francois
openaire   +4 more sources

Clinical Validation of Artificial Intelligence (AI)‐based Cartilage Segmentation Predicting Knee Replacement

open access: yesArthritis Care &Research, Accepted Article.
Objective For cartilage morphology to serve as a scalable endpoint in clinical trials, analyses should be performed automatically without human interaction. To clinically validate artificial intelligence (AI)‐based analysis, we studied cartilage loss from MRI prior to knee replacement.
Felix Eckstein   +3 more
wiley   +1 more source

Optical trapping with a perfect vortex beam [PDF]

open access: yes, 2014
The authors would like to thank the UK Engineering and Physical Sciences Research Council (EPSRC) for funding.Vortex beams with different topological charge usually have different profiles and radii of peak intensity.
Arita, Yoshihiko   +9 more
core   +1 more source

Eulerian and Lagrangian observability of point vortex flows [PDF]

open access: yesTellus A: Dynamic Meteorology and Oceanography, 2008
We study the observability of one and two-point vortex flow from one or two Eulerian or Lagrangian observations. By observability, we mean the ability to determine the locations and strengths of the vortices from the time history of the observations. An Eulerian observation is a measurement of the velocity of the flow at a fixed point in the domain of ...
openaire   +2 more sources

Automated Hand Flexor Tendon–Thickness Measurement in Systemic Sclerosis

open access: yesArthritis Care &Research, EarlyView.
Objective Systemic sclerosis (SSc) can affect flexor tendons, contributing to hand function problems and reduced quality of life. Tendon changes are currently assessed with ultrasonography and measured manually, a time‐consuming process prone to interobserver variability.
Mark Greveling   +4 more
wiley   +1 more source

Some estimates on the space scales of vortex pairs emitted from river mouths [PDF]

open access: yesNonlinear Processes in Geophysics, 2001
Two-dimensional vortex pairs are frequently observed in geophysical conditions, for example, in a shelf zone of the ocean near river mouths. The main aims of the work are to estimate the space scales of such vortex structures, to analyze possible ...
V. P. Goncharov, V. I. Pavlov
doaj  

Direct simulation of acoustic radiation with a feedback loop around a trailing edge of a curved plate with an upstream kink shape in a laminar boundary layer

open access: yesNihon Kikai Gakkai ronbunshu, 2015
Intense tonal sound radiates from flows around a trailing edge with an upstream kink shape such as found in an automotive body. To clarify the acoustic radiation mechanism and the effects of the kink shape angle on tonal sound, direct numerical ...
Hiroshi YOKOYAMA   +4 more
doaj   +1 more source

dynoGP: Deep Gaussian Processes for Dynamic System Identification

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This work introduces a novel class of deep models for system identification, dynamical deep Gaussian processes, which combine the strengths of data‐driven methods, such as those based on neural network architectures, with the ability to output a probability distribution for uncertainty representation.
Alessio Benavoli   +3 more
wiley   +1 more source

Wake-Vortex Topology, Circulation, and Turbulent Exchange Processes [PDF]

open access: yes, 2012
Large eddy simulations () of aircraft wake vortex evolution in various turbulent and stably stratified atmospheric environments have been conducted with two different LES codes.
Hennemann, Ingo   +2 more
core  

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