Inductive interference from HVAC power lines on metallic pipelines using FLARE - Finite eLement Analysis foR Electromagnetics

Popoli, Arturo; Ragazzi, Fabio; Pierotti, Giacomo; Cristofolini, Andrea

doi:10.1109/eeeic/icpseurope57605.2023.10194759

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…For a 2D case, the computational problem could be solved using a magnetic vector potential formulation as in refs and . However, thanks to the absence of free currents, one has J = 0 in equation ∇ × H = J , which yields a magnetic field that is irrotational in every point of the considered geometry.…”

Section: Resultsmentioning

confidence: 99%

A Novel Approach for Quantifying Magnetic Susceptibility of Aqueous and Organic Solutions

Wojtaszek,

Cristofolini,

Popoli

et al. 2024

J. Phys. Chem. A

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A new method for measuring the magnetic properties of aqueous and organic solutions is presented. This approach is based on quantifying the force resulting from the sample's interaction with a magnetic field. The experimental setup utilizes neodymium magnets attached to a stepper motor to adjust the distance between the magnets and the test sample, while an analytical balance serves as a strain gauge. Magnetic susceptibility measurements were performed on selected inorganic and organic solutions. A series of finite element simulations allowed us to convert experimental results to physical quantities describing magnetic susceptibilities of substances. The limit of detection (LoD) and limit of quantification (LoQ) values for the developed method of determining magnetic susceptibility were equal to 6.67• 10 −3 M and 2.02•10 −2 M, respectively.

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Section: Resultsmentioning

confidence: 99%

A Novel Approach for Quantifying Magnetic Susceptibility of Aqueous and Organic Solutions

Wojtaszek,

Cristofolini,

Popoli

et al. 2024

J. Phys. Chem. A

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An Efficient Numerical Technique for the Simulation of Charge Transport in Polymeric Dielectrics

Ragazzi,

Popoli,

Cristofolini

2024

IEEE Access

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In recent years, the use of HVDC cables has grown exponentially. One of the main challenges that remains concerns the space charge accumulation inside the insulating materials. A better understanding of the mechanisms governing this phenomenon is essential to improve the performance of HVDC systems. Numerical simulations are often employed to achieve this goal. For this reason, it is important to perform them in an efficient way. In this work, we test several numerical techniques, aiming to assess which one is the best to use for fast and reliable simulations. We consider a well-known bipolar dynamic model from the literature for our simulations. The model considers a single level of deep traps and is implemented in a one-dimensional Cartesian coordinate system, considering a thin specimen of polymeric material. We compare three different time discretization methods: a fully explicit, a semi-implicit, and a fully implicit approaches. For the advective flux discretization, we compare the first-order upwind scheme (FOU) with a second-order upwind scheme coupled with the Koren flux limiter (SOU/KL). Regarding the computation of the polarization current, we introduce a simple approach using Sato's equation and compare it with the well-established approach based on the total current density.INDEX TERMS Bipolar charge transport, Koren flux limiter, polymeric dielectrics, drift diffusion, polarization current, numerical simulation, efficient computation.

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Quasi-2D Finite Volume Modeling of Corona Discharges for Ionic Propulsion: Comparison of Reduced Reaction Schemes

Ragazzi,

Caliò,

Pierotti

et al. 2024

2024 IEEE 5th International Conference on Dielectrics (ICD)

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Inductive interference from HVAC power lines on metallic pipelines using FLARE - Finite eLement Analysis foR Electromagnetics

Cited by 3 publications

References 28 publications

A Novel Approach for Quantifying Magnetic Susceptibility of Aqueous and Organic Solutions

A Novel Approach for Quantifying Magnetic Susceptibility of Aqueous and Organic Solutions

An Efficient Numerical Technique for the Simulation of Charge Transport in Polymeric Dielectrics

Quasi-2D Finite Volume Modeling of Corona Discharges for Ionic Propulsion: Comparison of Reduced Reaction Schemes

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