Results 21 to 30 of about 30,976 (242)

Numerical Investigation of Erosion Wear Characteristics of Hydraulic Spillway

open access: yesApplied Sciences, 2021
There are many sand-laden waters in China, and the wear of hydraulic structures caused by sand-laden water diversion has been paid more and more attention.
Cong Zhang   +4 more
doaj   +1 more source

A Pressure-Based Multiphase Flowmeter: Proof of Concept

open access: yesSensors, 2023
Multiphase flowmeters (MPFMs) measure the flow rates of oil, gas, and brine in a pipeline. MPFMs provide remote access to real-time well production data that are essential for efficient oil field operations.
Vijay Ramakrishnan, Muhammad Arsalan
doaj   +1 more source

Field-Oriented Control of Five-Phase Induction Motor Fed From Space Vector Modulated Matrix Converter

open access: yesIEEE Access, 2022
This paper presents the field-oriented control (FOC) of a five-phase induction motor (FPIM) fed from a three-to-five phase direct matrix converter (DMC).
Khaliqur Rahman   +6 more
doaj   +1 more source

Does Heterogeneous Strain Act as a Control on Seismic Anisotropy in Earth’s Lower Mantle?

open access: yesFrontiers in Earth Science, 2020
Plastic deformation and texture development in minerals of the lower mantle can result in seismic anisotropy, and studying deformation of lower mantle materials is therefore important for interpreting lower mantle flow.
Samantha Couper   +4 more
doaj   +1 more source

Performance Analysis of Direct Torque Controllers in Five-Phase Electrical Drives

open access: yesApplied Sciences, 2021
The industrial application of electric machines has grown in the last decades, thanks to the development of microprocessors and power converters, which have permitted their use as variable-speed drives. Although three-phase machines are the common trend,
Mario Bermúdez   +3 more
doaj   +1 more source

Improved Multicomponent Multiphase Lattice Boltzmann Model for Physical Foaming Simulation [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
The lattice Boltzmann models, especially the pseudopotential models, have been developed to investigate multicomponent multiphase fluids in presence of phase change process.
G. Lin, C. Geng, L. Zhang, F. Liu
doaj   +1 more source

Zero-/Low-Speed Operation of Multiphase Drive Systems With Modular Multilevel Converters

open access: yesIEEE Access, 2019
Modular multilevel converter (MMC)-based AC motor drives are emerging trend-research. They ease medium-/high-voltage handling in high-power applications with reduced footprint and life-cycle costs. A known challenge concerning their operation is the zero-
Mohamed I. Daoud   +5 more
doaj   +1 more source

Passive Mixing inside Microdroplets

open access: yesMicromachines, 2018
Droplet-based micromixers are essential units in many microfluidic devices for widespread applications, such as diagnostics and synthesis. The mixers can be either passive or active.
Chengmin Chen   +7 more
doaj   +1 more source

Control and Performance Evaluation of Multiphase FSPM Motor in Low-Speed Region for Hybrid Electric Vehicles

open access: yesEnergies, 2015
The flux-switching permanent-magnet (FSPM) motor has been viewed as a highly reliable machine with both armature windings and magnets on the stator. Owing to the high torque-production capability with low torque ripple, FSPM motors with a higher number ...
Feng Yu   +3 more
doaj   +1 more source

Quantification of Interdependent Dynamics during Laser Additive Manufacturing Using X‐Ray Imaging Informed Multi‐Physics and Multiphase Simulation

open access: yesAdvanced Science, 2022
Laser powder bed fusion (LPBF) can produce high‐value metallic components for many industries; however, its adoption for safety‐critical applications is hampered by the presence of imperfections.
Chu Lun Alex Leung   +7 more
doaj   +1 more source

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