Hybridized Discontinuous Galerkin Toolbox Benchmarks Examples of 2D Darcy flows We simulate two 2D Darcy flows in a unit square. RED: floating-gate nMOS transistor We simulate the distribution of the electric potential in a nanoscale floating-gate nMOS transistor working in inversion conditions. Cases Darcy flow through a channel We simulate a Darcy flow through a channel with two poorly porous panes.