A computational study of accelerating, steady and fading negative streamers in ambient air

B Guo, X Li, U Ebert, J Teunissen - Plasma Sources Science and …, 2022 - iopscience.iop.org
We study negative streamers in ambient air using a 2D axisymmetric fluid model. Depending
on the background electric field, we observe accelerating, steady and fading negative …

Quantitative modeling of streamer discharge branching in air

Z Wang, S Dijcks, Y Guo… - Plasma Sources …, 2023 - iopscience.iop.org
Streamer discharges are the primary mode of electric breakdown of air in lightning and high
voltage technology. Streamer channels branch many times, which determines the …

A computational study on the energy efficiency of species production by single-pulse streamers in air

B Guo, J Teunissen - Plasma Sources Science and Technology, 2023 - iopscience.iop.org
We study the energy efficiency of species production by streamer discharges with a single
voltage pulse in atmospheric dry air, using a 2D axisymmetric fluid model. Sixty different …

3D simulations of positive streamers in air in a strong external magnetic field

Z Wang, A Sun, S Dujko, U Ebert… - … Sources Science and …, 2024 - iopscience.iop.org
We study how external magnetic fields from 0 to 40 T influence positive streamers in
atmospheric pressure air, using 3D PIC-MCC (particle-in-cell, Monte Carlo collision) …

3D modeling of positive streamers in air with inhomogeneous density

B Guo, U Ebert, J Teunissen - Plasma Sources Science and …, 2023 - iopscience.iop.org
We study the effect of an inhomogeneous gas density on positive streamer discharges in air
using a 3D fluid model with stochastic photoionization, generalizing earlier work with a 2D …

3D particle-in-cell simulations of negative and positive streamers in C4F7N–CO2 mixtures

B Guo, U Ebert, J Teunissen - Plasma Sources Science and …, 2023 - iopscience.iop.org
We investigate negative and positive streamers in C 4 F 7 N–CO 2 mixtures through
simulations. These mixtures are considered to be more environmentally friendly than the …

3D adaptive finite-element forward modeling for direct current resistivity method using geometric multigrid solver

C Qin, W Fu, N Zhao, J Zhou - Computers & Geosciences, 2025 - Elsevier
The direct current (DC) resistivity method is an effective method for detecting subsurface
structures with conductive differences. The three-dimensional forward modeling of DC …

Double-pulse streamer simulations for varying interpulse times in air

H Malla, A Martinez, U Ebert… - Plasma Sources Science …, 2023 - iopscience.iop.org
In this paper, we study how streamer discharges are influenced by a previous voltage pulse
using an axisymmetric fluid model. We simulate double-pulse positive streamers in N 2–O 2 …

[HTML][HTML] Inverse problem for the nonlinear convection–diffusion equation by using the multigrid method and constraint data

S Wang, S Ling, H Chao, Y Qi, W Zhang, Q Ma, T Liu - Mathematics, 2024 - mdpi.com
In the article, we propose a combination method based on the multigrid method and
constraint data to solve the inverse problem in the context of the nonlinear convection …

Streamer discharge simulations in humid air: uncertainty in input data and sensitivity analysis

B Guo, H Malla, A Malagon-Romero… - arxiv preprint arxiv …, 2024 - arxiv.org
We study how the choice of input data affects simulations of positive streamers in humid air,
focusing on H2O cross sections, photoionization models, and chemistry sets. Simulations …