Isolated buoyant convection in a two-layered porous medium with an inclined permeability jump

Abstract

Abstract

Buoyant convection in heterogeneous porous media with an inclined permeability jump: an experimental investigation of filling box-type flows

“…Somewhat after-the-fact, this rationalizes why the present analysis is so much more involved than that summarized by Bharath et al. (2020). In that study, the lower layer was effectively considered infinitely deep such that the dynamical phenomena of remobilization, layer filling and plume deflection became moot.…”

“…On the other hand, the theory and laboratory experiments reported by Bharath et al. (2020) do not provide meaningful insights into the longer term dynamics and how these are influenced by (i) the depth of the lower layer, and (ii) the presence of sidewall boundaries. To this end, the experiments described in this study provide an especially interesting vantage point from which to study filling box dynamics because of the appearance of primary and secondary gravity currents.…”

“…Facilitating this process, we construct ITS images using the methodology summarized by Bharath et al. (2020). In brief, a diagonal line of slope is drawn two or three pixels above the permeability jump.…”

“…2001; Goda & Sato 2011; Sahu & Flynn 2017; Bharath et al. 2020). Notable in this study is that the draining fluid does not fall indefinitely.…”

“…2019). The former complication was incorporated into the recent theoretical study of Bharath, Sahu & Flynn (2020). They consider up- and downdip gravity currents fed by a descending plume rather than by a source located along the permeability jump.…”