Results 21 to 30 of about 4,414,012 (305)
Agriculture, 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
A non-linear observer for unsteady three-dimensional flows [PDF]
, 2007 A method is proposed to estimate the velocity field of an unsteady flow using a limited number of flow measurements. The method is based on a non-linear low-dimensional model of the flow and on expanding the velocity field in terms of empirical basis ...
A. Iollo +28 more
core +6 more sources
Flow Analysis and Structural Optimization of Double-Chamber Parallel Flexible Valve Micropumps
ChemEngineering, 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
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Field and flow-based separations [PDF]
Analytical 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
Energy 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
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Study on Evolution Characteristics of Gas–Liquid Interaction in a New Gas-Curtain Launcher
Journal 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
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A new methodology for the quantitative visualization of coherent flow structures in alluvial channels using multibeam echo-sounding (MBES) [PDF]
, 2010 In order to investigate the interactions between turbulence and suspended sediment transport in natural aqueous environments, we ideally require a technique that allows simultaneous measurement of fluid velocity and sediment concentration for the whole ...
Best, J L +7 more
core +3 more sources
Stable Feature Flow Fields [PDF]
IEEE 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
The flow field downstream of a hydraulic jump [PDF]
, 1995 A control-volume analysis of a hydraulic jump is used to obtain the mean vorticity downstream of the jump as a function of the Froude number. To do this it is necessary to include the conservation of angular momentum.
Hornung, Hans G. +2 more
core +1 more source
Frontiers 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
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