This paper presents a numerical analysis for computation of free
space capacitance of different arbitrarily shaped conducting bodies based on
the finite element method with triangular subsection modeling. Evaluation of
capacitance of different arbitrary shapes is important for the electrostatic
analysis. Capacitance computation is an important step in the prediction of electrostatic
discharge which causes electromagnetic interference. We specifically
illustrated capacitance computation of electrostatic models like unit cube,
rectangular plate, triangular plate, T-shaped plate, sphere and two touching
spheres. Numerical data on the capacitance of conducting objects are presented.
The results are compared with other available results in the literature. We
used the COMSOL Multiphysics software for the simulation. The models are
designed in three-dimensional form using electrostatic environment and can be
applied to any spacecraft circuit modeling design. The findings of this study
show that the finite element method is a more accurate method and can be
applied to any circuit modeling design.
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