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Given two solid bodies of masses $m_1$ and $m_2$ with invariable charge distributions $\rho_1(\mathbf{r_1})$ and $\rho_2(\mathbf{r_2})$ in them,* respectively, I would like to model the electrical interaction of the bodies using a user-specified electrical force law.

* $\mathbf{r_1}$ and $\mathbf{r_2}$ are measured with respect to a coordinate system fixed to body 1 and body 2, respectively.

What open source multiphysics software packages could I use to model the motion of these bodies?

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  • $\begingroup$ I don't know of any software that can do this. But I imagine that you can combine a Boundary element method and a time integration scheme (like Verlet integration) for each iteration ... but I doubt that it is optimal. $\endgroup$
    – nicoguaro ♦
    Feb 21 '19 at 21:21

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