Journal
COMPUTATIONAL GEOSCIENCES
Volume 23, Issue 5, Pages 953-967Publisher
SPRINGER
DOI: 10.1007/s10596-019-09852-5
Keywords
Matrix diffusion; Advection; Porous media; Solute transport; Breakthrough curve; Simulation
Funding
- Finnish Research Programme on Nuclear Waste Management [KYT2018]
Ask authors/readers for more resources
The time domain-random walk method was developed further for simulating mass transfer in fracture flows together with matrix diffusion in surrounding porous media. Specifically, a time domain-random walk scheme was developed for numerically approximating solutions of the advection-diffusion equation when the diffusion coefficient exhibits significant spatial variation or even discontinuities. The proposed scheme relies on second-order accurate, central-difference approximations of the advective and diffusive fluxes. The scheme was verified by comparing simulated results against analytical solutions in flow configurations involving a rectangular channel connected on one side with a porous matrix. Simulations with several flow rates, diffusion coefficients, and matrix porosities indicate good agreement between the numerical approximations and analytical solutions.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available