An Efficient Semi-Lagrangian Algorithm for Simulation of Corona Discharges: The Position-State Separation Method
2016 (English)In: IEEE Transactions on Plasma Science, ISSN 0093-3813, E-ISSN 1939-9375, Vol. 44, no 11, 1-10 p.Article in journal (Refereed) Published
An efficient algorithm without flux correction for simulation of corona discharges is proposed. The algorithm referred to as the position-state separation method (POSS) is used to solve convection-dominated continuity equations commonly present in corona discharges modelling. The proposed solution method combines an Eulerian scheme for the solution of the convective acceleration, the diffusion and the reaction subproblems, and a Lagrangian scheme for the solution of the linear convection subproblem. Several classical numerical experiments in different dimensions and coordinate systems are conducted to demonstrate the excellent performance of POSS regarding low computational cost, robustness, and high-resolution. It is shown that the time complexity of the method when dealing with the convection of charged particles increases linearly with the number of unknowns. For the simulation of corona discharges where local electric fields do not change strongly in time, the time step of POSS could be much larger than the Courant–Friedrichs–Lewy (CFL) time step. These special features enable POSS to have great potential in modeling of corona discharges in long interelectrode gaps and for long simulation times.
Place, publisher, year, edition, pages
IEEE Press, 2016. Vol. 44, no 11, 1-10 p.
Semi-Lagrangian method; simulation; corona discharges; convection-dominated
Other Electrical Engineering, Electronic Engineering, Information Engineering Fusion, Plasma and Space Physics
Research subject Electrical Engineering
IdentifiersURN: urn:nbn:se:kth:diva-193002DOI: 10.1109/TPS.2016.2609504OAI: oai:DiVA.org:kth-193002DiVA: diva2:974122
QC 201609282016-09-242016-09-242016-10-11Bibliographically approved