Results 21 to 30 of about 262,370 (323)

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

A High Performance Lattice Boltzmann Solver with Applications to Multiphase Flow in Porous Media [PDF]

open access: yes, 2019
Multiphase flow is significant to many industrial processes such as the geologic storage of CO2 and oil recovery. Microscale simulation of flow in complex geological formations such as saline aquifers or oilfields is a complex and challenging task.
Bakhshian, Sahar   +2 more
core   +1 more source

Aging can transform single-component protein condensates into multiphase architectures

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2022
Significance Biomolecular condensates are highly diverse systems spanning not only homogeneous liquid droplets but also gels, glasses, and even multiphase architectures that contain various coexisting liquid-like and/or gel-like inner phases.
A. Garaizar   +6 more
semanticscholar   +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

Acidity and the multiphase chemistry of atmospheric aqueous particles and clouds

open access: yesAtmospheric Chemistry and Physics, 2021
The acidity of aqueous atmospheric solutions is a key parameter driving both the partitioning of semi-volatile acidic and basic trace gases and their aqueous-phase chemistry.
A. Tilgner   +9 more
semanticscholar   +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

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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