  We present the visual analysis of our novel parameter study of porous media
experiments, focusing on gaining a better understanding of drainage processes
on the micro-scale. We analyze the temporal evolution of extracted
characteristic values, and discuss how to directly compare experiments that
exhibit processes at different temporal scales due to varying boundary and
physical conditions. To enable spatio-temporal analysis, we introduce a new
abstract visual representation showing which paths through the porous media
were occupied to what extent, e.g., allowing for classification into viscous
and capillary regimes. This joint work of porous media experts and
visualization researchers yields new insights regarding immiscible two-phase
flow on the micro-scale toward the overarching goal of characterizing flow
based on boundary conditions and physical fluid properties.
