The field modelling becomes simpler if strong field nonuniformities are solved theoretically. The early-obtained formulas for 2-D "corner" permeances, (capacitances or resistances) pertain to right angle configurations. In this paper, using a conformal mapping and analytical approximations, the field in the vicinity of arbitrary angle corner is studied and the corner resistance determined. Obtained results can be applied to a large range of electromagnetic and microelectronic devices. They agree with early-obtained values for right angle corner and with the FEM simulation.
Cividjian, G. A., & Matagne, E. (2010). Resistance of Arbitrary Angle Corner. Przeglad Elektrotechniczny, 86(5), 83-86. https://hdl.handle.net/2078.5/131598 (Original work published 2010)