Research on electrical field distribution and corona current inside two concentric cylindrical powder silos

摘要

This paper derived a general exact solution of potential between two concentric cylindrical electrodes, presented the electrical field distribution between two electrodes. In addition to rigorous mathematical analysis, an approximate expression based on the empirical form of Warburg's formula for current-voltage relationship was derived systematically. Townsend's formula for small current can be obtained directly from Taylor expansion of the exact solution.