diagnosedUsing Finite element method Method Fluid-Poisson Model Diagnostic Method benchmarking Method finite volume method Method
hasDescription Configuration for positive streamer: atmospheric-pressure air, gas temperature of 300 K, two electrodes set 1.25 cm apart with a radius of 1.25 cm, constant voltage of -18.75 kV applied at the powered electrode, additional Gaussian seed of ions introduced near the anode Test case 1: positive streamers in dry air at 1 bar and 300 K, simulated between planar electrodes in a square domain with a radius and height of 1.25 cm, background electric field of 15 kV/cm, Gaussian distribution of positive ions is placed below the anode, constant initial background density of electrons and Ions of 10¹³ m⁻³, no photoionization
hasProperty Three test cases for positive streamers in dry air at 1 bar and 300 K. Discharges are simulated between planar electrodes in a square domain with a radius and height of 1.25 cm. A background electric field of 15 kV/cm is present, which is well below the breakdown value. To locally enhance the electric field to values above the breakdown threshold, a Gaussian distribution of positive ions is placed below the anode. First test case: constant initial background density of electrons and Ions of 10¹³ m⁻³, no photoionization; second test case: constant initial background density of electrons and ions of 10⁹ m⁻³, no photoionization; third test case: constant initial background density of electrons and ions of 10⁹ m⁻³, photoionization included.
involvedIn Comparison of six simulation codes for positive streamers in air Plasma Study Introduction and verification of FEDM, an open-source FEniCS-based discharge modelling code Plasma Study