Impact of gravity and inertia on stable displacements of DNAPL in highly permeable porous media
نویسندگان
چکیده
The flow of Dense Non-Aqueous Phase Liquid (DNAPL) in highly permeable porous media is characterized by a complex interplay between surface tension, viscous, gravity, and inertia forces. Gravitational effects these systems have been particularly studied the context displacement instability, but little work has focused on impact gravitational forces stable DNAPL non-fractured media. Here, we study gravity Forchheimer numbers fronts We first performed injection experiments bead packings different sizes for inlet rates initial saturation. These were accurately modeled using Darcy–Forchheimer model combined with an Arbitrary Lagrangian–Eulerian tracking front. Once validated against injections glass beads, was then used to perform broader parametric than available our experimental setup. explored pumping scenarios over range dimensionless numbers. found that can significantly alter fluid front flows commonly contaminant hydrology. estimate, however, will non-negligible upon only during active remediation techniques (e.g., free product method) or pipe rupture events involving low-viscous highly-permeable
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ژورنال
عنوان ژورنال: Advances in Water Resources
سال: 2022
ISSN: ['1872-9657', '0309-1708']
DOI: https://doi.org/10.1016/j.advwatres.2022.104139