Results 41 to 50 of about 100,432 (219)

Analysis of vortex shedding in a various body shapes [PDF]

open access: yes, 2015
The study of various bluff body shapes is important in order to identify the suitable shape of bluff body that can be used for vortex flow meter applications.
Mohd Noor, Nazihah
core  

Ultra-fast escape maneuver of an octopus-inspired robot [PDF]

open access: yes, 2014
We design and test an octopus-inspired flexible hull robot that demonstrates outstanding fast-starting performance. The robot is hyper-inflated with water, and then rapidly deflates to expel the fluid so as to power the escape maneuver.
Subramaniam, V.   +2 more
core   +1 more source

Blade Count and Rotational Speed Sensitivity of Vertical‐Axis Turbines Under Guided Vehicle‐Generated Transient Wakes

open access: yesEnergy Science &Engineering, EarlyView.
Passing vehicles generate short‐duration wakes that can be redirected toward a vertical‐axis turbine. The interaction between wake structure, blade count, and rotational speed governs transient torque production. Low‐solidity configurations combined with tuned rotational speed enhance energy extraction under vehicle‐induced gusts.
Aydin Ulus, Stefan Ilie Moldovan
wiley   +1 more source

Flow Control, Active and Passive Applications

open access: yesApplied Sciences, 2023
The Boundary Layer (BL) dynamic performance greatly affects the forces acting on any Bluff body [...]
Josep M. Bergadà, Gabriel Bugeda
doaj   +1 more source

Mentalizing difficulties are transdiagnostic and explain links between mental health and neurodevelopmental symptoms and social adjustment in school‐aged children

open access: yesJCPP Advances, EarlyView.
Growing evidence suggests that difficulties reasoning about others' thoughts, feelings and desires (called ‘mentalizing’ or ‘theory of mind’) cut across many mental health and neurodevelopmental conditions but studies have yet to test this claim directly.
Rory T. Devine   +2 more
wiley   +1 more source

The Design and Experiment of a Spring-Coupling Electromagnetic Galloping Energy Harvester

open access: yesMicromachines, 2023
In order to improve the output characteristics of the electromagnetic energy harvester in a high-speed flow field, a spring-coupling electromagnetic energy harvester (SEGEH) is proposed, based on the galloping characteristics of a large amplitude.
Lei Xiong   +5 more
doaj   +1 more source

Longitudinal Relations Among Theory of Mind, Advanced Theory of Mind, and Executive Function From Ages Four to Seven. [PDF]

open access: yesDev Sci
ABSTRACT This longitudinal study examined the developmental relations between first‐order Theory of Mind (ToM), advanced ToM, and executive function (EF) from ages 4 to 7.5. Two‐hundred‐three German children were assessed at ages 4, 5.5, and 7.5 on measures of ToM, EF (working memory, inhibition, cognitive flexibility), general cognition, and language.
Osterhaus C   +3 more
europepmc   +2 more sources

Interaction Between Vortex‐Induced Vibrations and Base Vibrations in Piezoelectric Harvesters

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In the present era, powering sensors using green energy is a significant challenge. One promising solution for the power supply of small sensors relies on piezoelectric energy harvesters excited by vortex‐induced vibrations (VIVs) generated by wind.
Michele Tonan   +3 more
wiley   +1 more source

Pengaruh Variasi Jarak Penghalang Segitiga di depan Silinder Arah Vertikal terhadap Drag

open access: yesJurnal Energi Dan Manufaktur, 2018
Salah satu cara untuk menghemat energi pada pesawat terbang dan bluff body lainnya adalah dengan mengurangi drag. Drag erat hubungannya dengan separasi aliran. Semakin awal terjadi separasi maka drag semakin meningkat.
I Putu Gede Gunawan Tista   +2 more
doaj   +1 more source

Numerical Simulation Study on the Dynamics of Bluff-Body Flames under Oxygen-Lean Conditions

open access: yesEnergies, 2023
As modern aeroengine combustors advance towards high temperatures, afterburners are inevitably affected by diminished oxygen content in incoming flows, thus affecting combustion efficiency, instability, and flammability limits. In this study, the dynamic
Fuquan Deng   +7 more
doaj   +1 more source

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