Advection diffusion model for gas transport within a packed bed of JSC-1A regolith simulant

The advection diffusion model was evaluated for gas transport within a packed bed of lunar JSC-1A regolith simulant at low to medium total pressures over three flow regimes: (1) the slip flow (2) transition and (3) Knudsen regimes. These regimes are pertinent to the design of H2O extraction devices for in-situ resource utilization, sampling missions, and surface science. Experiments were conducted over a range of average pressures of 100 to...