Pseudo-spectral 3D simulations of streamers
A three-dimensional code for the simulation of streamers is introduced. The code is based on a fluid model for oxygen-nitrogen mixtures that includes drift, diffusion and attachement of electrons and creation of new charge carriers through impact ionization and photo-ionization. The electric field created by the space charges is solved self-consistently. The code assumes that the streamer geometry is not far from an axisymmetric configuration and it is therefore possible to apply a relatively coarse discretization in the angular coordinate. The other two coordinates are represented in adaptively refined grids, allowing a fine resolution of the space-charge layer. In order to take advantage of multiprocessor machines, a pseudo-spectral method (applying discrete Fourier transform forth and back at each time-step) was implemented to resolve the angular dependence.
|Institute of Plasma Physics AS CR, v.v.i.|
|J. Schmidt , M. Simek , S. Pekarek , V. Prukner|
|International Conference on Phenomena in Ionized Gases|
Luque, A, Ebert, U, Montijn, C, & Hundsdorfer, W. (2007). Pseudo-spectral 3D simulations of streamers. In J Schmidt, M Simek, S Pekarek, & V Prukner (Eds.), Proceedings of the 28th International Conference on Phenomena in Ionized Gases (ICPIG) (pp. 546–549). Institute of Plasma Physics AS CR, v.v.i.