Figure 8.
At higher gas pressure, visco-capillary two-phase flow occurs: gas invades the EDZ, starting with discontinuities, in addition to diffusion (not shown). The chevron pattern shows increasing gas flux Refer to the image caption for details.The panels present visco capillary two phase flow around a tunnel within the excavation damaged zone. The first panel shows initial flow pathways forming along discontinuities near the tunnel. The second panel shows expanded flow distribution with increased connectivity and spread across the damaged zone, indicating progression of two phase flow.

At higher gas pressure, visco-capillary two-phase flow occurs: gas invades the EDZ, starting with discontinuities, in addition to diffusion (not shown). The chevron pattern shows increasing gas flux

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