Modelling with measures: Approximation of a mass-emitting object by a point source

Joep H. M. Evers, Sander C. Hille, Adrian Muntean

We consider a linear diffusion equation on $\Omega :={\mathbb{R}}^2\setminus \overline{{\Omega }_{\mathcal{O}}}$, where ${\Omega }_{\mathcal{O}}$ is a bounded domain. The time-dependent flux on the boundary $Γ:=\pa…