Eulerian modelling of gas–solid flows with triboelectric ...

    Grosshans, H. & Papalexandris, M. V. 2016 Large Eddy simulation of triboelectric charging in pneumatic powder transport. Powder Technol. 301, 1008 – 1015 . Grosshans, H. & Papalexandris, M. V. 2017 Direct numerical simulation of triboelectric charging in particle-laden turbulent channel flows .

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    Boost the Performance of Triboelectric Nanogenerators ...

    TENG form an oscillation circuit so that the voltage and charge of TENG will flip and accumulate in each cycle. According to the simulation, for a free-standing mode TENG with intrinsic capacitance of 0.5 nF, open-circuit voltage of 100 V, and har-monic excitation frequency of 1 Hz, the output of OA-TENG is

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    Particle dynamics simulations of the effect of particle ...

    The simulations show that triboelectric charging in these systems can be attributed to a distribution of particle sizes, such that smaller particles tend to charge negatively and larger particles tend to charge positively. This polarity of charging has been observed in field studies and laboratory experiments involving granular systems.

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    Plasma wake simulations and object a shadowed lunar .

    Plasma wake simulations and object charging in a shadowed lunar crater during a solar storm. M. I. Zimmerman1,2, T. L. jackson,,2, W. M. Farrell1.2, T. j. Stubbs ' ... environments triboelectric charging of the astronaut suit becomes effectively ... handful of simulations with a .

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    Why does rubbing a balloon on your hair make it stick?

    Aug 29, 2017 · Triboelectric charging causes toner from a photocopier or laser printer to stick to paper, and likely facilitated the formation of planets from space dust and the origin of life on earth.

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    Triboelectric Series: Positive- and Negative-charging ...

    Triboelectric Series . Electrostatic discharge (ESD), which is the rapid transfer of electrostatic charge between two objects that can result in damage to semiconductor devices, arises from charge build-up that occurs as a result of an imbalance of electrons on the surface of a material.

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    Plasma wake simulations and object a shadowed lunar .

    Plasma wake simulations and object charging in a shadowed lunar crater during a solar storm. M. I. Zimmerman1,2, T. L. jackson,,2, W. M. Farrell1.2, T. j. Stubbs ' ... environments triboelectric charging of the astronaut suit becomes effectively ... handful of simulations with a .

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    Triboelectric charging of lunar regolith simulant ...

    [10] Triboelectric charging due to contact of chemically identical surfaces is still not a well understood process. In fact, it is counterintuitive that charging occurs at all in this case, since charge transfer is typically driven by differences in chemical properties (e.g., work function).

    • Published in: Journal of Geophysical Research · 2009Authors: Keith M Forward · Daniel J Lacks · R Mohan SankaranAffiliation: Case Western Reserve UniversityAbout: Charged particle · Triboelectric effect · Regolith · Particle size · Solar System · Plasma
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    Particle-Size-Dependent Triboelectric Charging in Single ...

    We carry out experiments to investigate the triboelectric charging due only to particle–particle collisions as a function of humidity. At low humidity, we find that large particles tend to charge positive and small particles tend to charge negative, in agreement with previous studies. However, at high humidity, we find no significant particle-size dependence for the particle charging.

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    Triboelectric effect and charge | Physics | Khan ... - YouTube

    Dec 10, 2014 · Learn the physics behind why a balloon clings to things after you rub it on a sweater. Watch the next lesson: https://

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    Large Eddy simulation of triboelectric charging in ...

    The triboelectric charging of powders and hoses during pneumatic transport can cause hazardous spark discharges. In this work we employ numerical simulations to gain a deeper understanding in the physical processes involved in the build-up of electrostatic charge.

      Cited by: 19[PDF]
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    The effects of granular dynamics on the triboelectric ...

    and numerical simulations specifically designed to link the dynamics of a flow of ash to its electrification behavior. Based on the devices described by Forward et al. [2009a] and Bilici et al. [2014], we constructed a spouted-bed instrument capable of characterizing the triboelectric charging of ash due to solely particle-particle collisions.

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    Triboelectric Nanogenerator: A Foundation of the Energy ...

    The triboelectric charge density of the test material with respect to a certain liquid metal such as Galinstan is measured. A dimensionless material FOM is defined by normalizing the triboelectric charge density from the test material with that from a reference material such as .

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    Simulation of Triboelectric Effect in COMSOL Multiphysics?

    Multi-Physics Simulations for Triboelectric Charging of Display Panels During the Roller Transfer P rocess.pdf 926.23 KB; ... For Simulation of Triboelectric nanogenerator on COMSOL mutiphysics.

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    Physics - Focus: Electrons Not the Cause of Charged Grains

    May 30, 2014 · Focus: Electrons Not the Cause of Charged Grains. May 30, 2014 • Physics 7, 58. ... "We have absolutely no idea what is happening with triboelectric charging and static electricity," which is indeed surprising, he says, given how common they are in our lives. ... according to simulations.

      Author: Michael Schirber
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    Dependence of triboelectric charging behavior on material ...

    by molecular dynamics simulations, SEM, UV-vis spectroscopy, and naked-eye observations. This suggests that material microstructure (voids and crazes) can govern the triboelectric charging behavior of materials. DOI: 10.1103/PhysRevMaterials.1.035605 I. INTRODUCTION Triboelectric charging describes the process by which two

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    Understanding and modeling of triboelectric-electret ...

    electret and therefore there are assimilated to a surface charge dis-tribution characterized by its surface charge density σ. For contact electrification, the triboelectric charges are located on the surface, within a thickness even smaller (tens of nm) than that in corona char-ging. However, for e-beam or X-ray charging for example, charges can

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    Static Electricity Study Finally Explains Why Rubbing ...

    Static Electricity Study Finally Explains Why Rubbing Balloon On Hair Makes It Stick. ... fun science experiments with balloons and the reason toner sticks to the photocopier paper. But static electricity, or triboelectric charging, is much bigger than that. ... using molecular simulations of strained materials. They could see how the voids ...

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    Triboelectric charges on HDPE are strain induced – About ...

    "Triboelectric charging experiments are generally known for their—as some would say—charmingly inconsistent results," said Andrew Wang, a Case Western Reserve PhD student and co-author who led the work. "What was surprising to me, initially, was the consistency of the unstrained versus strained charging results."

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    Theoretical investigation of triboelectric charging - NSF

    ABSTRACT TECHNICAL SUMMARY This award supports computational and theoretical research and education with the aim to elucidate the physical basis of triboelectric charging. The project has two thrusts: (1) Elucidation of triboelectric charging on a well-characterized system. The use of a well-characterized system will enable strong connections to be made with experiment and other simulations .

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    Agglomeration of Charged Nanopowders in Suspensions

    Agglomeration of Charged Nanopowders in Suspensions J.H. Werth1, M. Linsenbühler2, S.M. Dammer1, ... Triboelectric charging: If two electrically neutral ... our molecular dynamics simulations, all these forces are taken into account.

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