Results 91 to 100 of about 441,780 (278)
Spatio-temporal structure of turbulent Reynolds stress zonal flow drive in 3D magnetic configuration
New Journal of Physics, 2017 The poloidal dependence of the zonal flow drive and the underlying Reynolds stress structure are studied at the stellarator experiment TJ-K by means of a poloidal Langmuir-probe array.
B Schmid, P Manz, M Ramisch, U Stroth
doaj +1 more source
The Power of Unity: Collective Action and Smallholder Agricultural Performance in West Africa
Agribusiness, EarlyView.ABSTRACT We analyze the impact of collective action through farmer‐based organizations (FBOs) on smallholders' farm performance and income inequality in Ghana, Benin, The Gambia, and Mali. We find that FBO membership increases cereal yield in Ghana and The Gambia, legume yield in Mali, ruminant numbers in Benin and The Gambia, and total farm income in ...
Emmanuel Donkor +3 more
wiley +1 more source
Multimodal Locomotion of Soft Robots
Advanced Intelligent Systems, EarlyView.This review comprehensively surveys recent advances in multimodal locomotion within soft robotics. Typical locomotion modes are summarized and categorized. Furthermore, the underlying mechanisms enabling multimodal locomotion are discussed and classified into three primary categories: active control‐based, reconfiguration‐based, and environment ...
Zihao Yuan +4 more
wiley +1 more source
Turbulent Flow and Heat Transfer in Circular Couette Flows in Concentric Annulus
International Journal of Rotating Machinery, 1998 A numerical study is performed to investigate heat transfer and fluid flow in the hydrodynamically and thermally fully-developed region of an annulus, consisting of a heated rotating inner cylinder and a stationary insulated outer cylinder.
Shuichi Torii, Wen-Jei Yang
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Development of turbulence models for shear flows by a double expansion technique [PDF]
Turbulence models are developed by supplementing the renormalization group (RNG) approach of Yakhot and Orszag with scale expansions for the Reynolds stress and production of dissipation terms. The additional expansion parameter (eta) is the ratio of the
Gatski, T. B. +4 more
core +1 more source
Microfluidic Mixing with the Dynamic Control of Magnetic Actuation
Advanced Intelligent Systems, EarlyView.Schematic illustration and flow field visualization of magnetically actuated L‐shaped microrobots displaying cooperative vortex generation for enhanced microscale mixing. The left side shows the electromagnetic actuation setup, which enables programmable control of rotational direction and frequency.
Prashant Kishor Sharma +2 more
wiley +1 more source
A Novel Milli‐Scale Magnetic Robot Exploiting Rotation for Controlled Magnetic Particles Release
Advanced Intelligent Systems, EarlyView.Delivering magnetic particles can become a game changer in minimally invasive medicine. To cope with this challenge, a magnetically actuated milli‐scale carrier leveraging rotation to perform on‐demand tunable release of magnetic particles across multiple release events is presented.
Giordano De Angelis +3 more
wiley +1 more source
On Epistemological Boundaries of Turbulence Modeling Revealed through Stokes’ Reserved Stance on Reynolds’ RANS Equations [PDF]
长江科学院院报[Objective] This study reveals the epistemological rationale underlying George Gabriel Stokes’ cautious and reserved stance in his review of Osborne Reynolds’ groundbreaking 1895 paper proposing the Reynolds-Averaged Navier-Stokes (RANS) equations. While
ZHANG Xiao-feng
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Computational analysis of shock-induced flow through stationary particle clouds
, 2019 We investigate the shock-induced flow through random particle arrays using particle-resolved Large Eddy Simulations for different incident shock wave Mach numbers, particle volume fractions and particle sizes.
Omang, Marianne Gjestvold +3 more
core +1 more source
Mimicking Life: Autonomous Oscillating Artificial Cilia Driven by Chemical Power
Advanced Intelligent Systems, EarlyView.The synthesis and motion analysis of chemically actuated, individually autonomous artificial cilia are presented. Driven by an internal chemical reaction, the self‐driven individual cilia require no external stimuli. They undergo periodic oscillatory motion with a 3D beat pattern and exhibit chemotactic shifts, reminiscent of biological systems.
Rajata Suvra Chakrovorty +2 more
wiley +1 more source