Results 21 to 30 of about 1,337,593 (318)

CFD Simulation and Optimization of the Leaf Collecting Mechanism for the Riding-Type Tea Plucking Machine

open access: yesAgriculture, 2023
In the process of tea plucking and leaf gathering, the structure optimization design of the leaf collecting mechanism is the key element responsible for collecting fresh leaves.
Xiaoxing Weng   +9 more
doaj   +1 more source

Flow Analysis and Structural Optimization of Double-Chamber Parallel Flexible Valve Micropumps

open access: yesChemEngineering, 2023
In the current study, a two-dimensional numerical study is carried out to investigate the performance of a novel Double-Chamber Parallel Flexible Valve micropump, which utilized the electrowetting-on-dielectrics (EWOD) effect to drive the microfluid flow.
Fan Jiang, Jinfeng Wen, Teng Dong
doaj   +1 more source

Field and flow-based separations [PDF]

open access: yesAnalytical and Bioanalytical Chemistry, 2015
Field-flow fractionation (FFF) and related methods are a set of analytical methods for the separation and characterization of nanoand micro-size analytes. These methods were originally used for the characterization of synthetic polymers and biological macromolecules, before also providing important contributions to the field of environmental sciences ...
Lespes, Gaëtane   +2 more
openaire   +3 more sources

Rheological analysis of Newtonian and non‐Newtonian fluids using Marsh funnel: Experimental study and computational fluid dynamics modeling

open access: yesEnergy Science & Engineering, 2020
In the drilling industry, Marsh funnel viscosity is only a dynamic viscosity and cannot characterize actual rheology. Thus, measuring rheology using a Marsh funnel has been drawing considerable attention. In this study, we develop simplified mathematical
Zhaochuan Li, Lihui Zheng, Weian Huang
doaj   +1 more source

Study on Evolution Characteristics of Gas–Liquid Interaction in a New Gas-Curtain Launcher

open access: yesJournal of Marine Science and Engineering, 2022
For the new idea of a gas-curtain launcher with a grooved tube, the gas-curtain flow field and interior ballistic characteristics are mainly investigated in this paper.
Xinwei Zhang, Yonggang Yu, Yubo Hu
doaj   +1 more source

Separation characteristics of the gas and liquid phases in a vane-type swirling flow field [PDF]

open access: yes, 2018
In order to investigate inlet bubble size distribution, gas phase concentration, and swirling intensity in the swirling flow field of a vane-type separator, both flow loop experiments and numerical studies have been conducted in this work.
Liu S(刘硕)   +3 more
core   +1 more source

Field flows of dark energy [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2008
9 pages, 5 ...
Cahn, Robert N.   +2 more
openaire   +2 more sources

Determination of a steady velocity field in a rotating frame of reference at the surface of the Earth's core [PDF]

open access: yes, 1996
We relax the steady-motions theorem by solving for a steady velocity field at the surface of the core in a frame of reference drifting at a linear rate with respect to an observer fixed in the mantle frame of reference.
Whaler, Kathy; id_orcid, Davis, R. G.
core   +1 more source

A Multidisciplinary Investigation Into the Eruptive Style, Processes, and Duration of a Cascades Back-Arc Tholeiitic Basalt: A Case Study of the Brushy Butte Flow Field, Northern California, United States

open access: yesFrontiers in Earth Science, 2021
The Cascades back-arc in northern California is dominated by monogenetic tholeiitic basalts that erupted throughout the Pleistocene. Elucidating their eruptive history and processes is important for understanding potential future eruptions here. We focus
Drew T. Downs   +3 more
doaj   +1 more source

Stable Feature Flow Fields [PDF]

open access: yesIEEE Transactions on Visualization and Computer Graphics, 2011
Feature Flow Fields are a well-accepted approach for extracting and tracking features. In particular, they are often used to track critical points in time-dependent vector fields and to extract and track vortex core lines. The general idea is to extract the feature or its temporal evolution using a stream line integration in a derived vector field-the ...
Tino Weinkauf   +3 more
openaire   +2 more sources

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