Results 81 to 90 of about 897,659 (282)
Performance of polyacrylamide as drag reduction polymer of crude petroleum flow
Ain Shams Engineering Journal, 2014 The influence of polyacrylamide (PAM) as drag reducing polymer on flow of Iraqi crude oil in pipe lines was investigated in the present work. The effect additive concentration, pipe diameter, solution flow rate and the presence of radius elbows on the ...
Anees A. Khadom, Ali A. Abdul-Hadi
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Water Research XDrinking water distribution systems (DWDS) experience significant energy losses due to turbulence-induced drag. While shark-inspired riblet surfaces have been shown to reduce drag in controlled conditions, their effectiveness in DWDS remains uncertain, particularly under the dynamic flow variations.
Mirvahid Mohammadpour Chehrghani +4 more
openaire +1 more source
A Survey of Interlayer Interaction Models for Graphene and Other 2D Materials
Advanced Materials Interfaces, EarlyView.Van der Waals interactions arising from electronic polarization at atomically close interfaces generate corrugated interlayer energy landscapes that govern normal and tangential tractions. This review presents an overview of quantum, atomistic, analytical, and continuum modeling approaches, highlighting their roles across length scales in capturing ...
Gourav Yadav +2 more
wiley +1 more source
Advanced Materials Interfaces, EarlyView.Solid‐state nanopores are used to interrogate dendrimer‐peptide conjugates with systematically varied peptide loading. Single‐particle ionic current signatures reveal how ligand density modulates deformability, transport pathways, and electromechanical coupling during translocation.
Chaoming Gu +7 more
wiley +1 more source
Performance Parameters of Hydro-oscillator and Their Impacts on Drag Reduction Rate
Shiyou jixieIn order to rationally optimize the parameter design of hydro-oscillator and operating parameter setting in field application, a model of drill string oscillation in horizontal section was built for numerical simulation, and the numerical simulation ...
Jiang Hua +4 more
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Adjustability and Stability of Flow Control by Periodic Forcing: A Numerical Investigation
Journal of Marine Science and EngineeringThe efficient and stable application of periodic forcing for drag-reduction can help underwater vehicles operate at high speed for long durations and improve their energy-utilization efficiency.
Hongbo Li +4 more
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Dynamic Current Routing in Conductive Liquid Crystal Elastomers for Complex Deformation Actuators
Advanced Materials Technologies, EarlyView.This work introduces a novel actuation control strategy in which electrical stimulation generates localized Joule heating in conductive liquid crystal elastomer (LCE) surfaces, enabling complex 3D deformations from a single homogeneous surface without preprogramming.
Gloria PouWai Lei +2 more
wiley +1 more source
Analysis of the Drag Reduction Performance and Rheological Properties of Drag-Reducing Additives
PolymersIn the practical application of hydraulic rotating machinery, it is essential to thoroughly explore drag reduction and rheological characteristics of drag-reducing additives to optimize machinery efficiency and reduce equipment consumption.
Ailian Chang +3 more
semanticscholar +1 more source
Fully 3D‐Printed Wave‐Wound Electromagnetic Motors
Advanced Materials Technologies, EarlyView.This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe +4 more
wiley +1 more source
Effect of Molecular Weight on Turbulent Drag Reduction with Polyisobutylene
مجلة النهرين للعلوم الهندسية, 2008 Turbulent drag-reduction efficiency of polyisobutylene with three different, very high molecular weights was studied in a build-up closed loop gas oil circulation system.
Jabir . Shanshool +1 more
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