ABSTRACT:

This repository is for the computational dataset of the cobble-driven hyporheic exchange simulation using hyporheicFoam (https://www.hydroshare.org/resource/2599efbdbdc04e669959da368ee0b7c0/).

We generated an idealized synthetic channel with an array of four cobbles placed on the sediment bed in a staggered pattern. The surface and subsurface domains are 0.3 m and 1 m deep, respectively. The channel velocity is set to 0.1 m/s. The axial diameters of the cobble are 10, 8, 6 cm in streamwise, lateral, and vertical directions. For this example, the spacing (the number of diameters between cobble centers) is 2 and the protrusion ratio (the ratio of the height of the protruded part of the cobble to the total height of the cobble) is 5%. For the cobble-water interface, a no-slip condition is applied whereas a no-flow condition was imposed on the cobble-sediment interface.

Users can run surface flow simulation by executing "Allrun.surf" which starts at "0" and ends at "100" and the subsurface flow and transport simulations by executing "Allrun.subs" which starts at "101" and ends at "200100". In "postProcessing/subsurface/totalC_sub", the amount of solute residing in the sediment bed is computed and stored while running the subsurface simulation.

ABSTRACT:

# README #
This repository is for the source code of hyporheicScalarInterFoam and its example cases. hyporheicScalarInterFoam is a solver developed with OpenFOAM v5 simulating free-surface water flow and the associated hyporheic flow.

The directory "solver" includes the source code of the solver, hyporheicScalarInterFoam.
The directory "libraries" contains the tools for the boundary conditions and solver.
The directory "case" has an example case of surface and subsurface flow simulations for U_bar = 1.0 m/s. Once the surface flow simulation is done in "Surface_flow", the latest step result is used to solve for the subsurface flow in the "Subsurface_flow" folder. The simulation can be executed by running Allrun.surf for surface flow and Allrun.subs for subsurface flow.

## Acknowledgements ##

The development of this code is supported by the U.S. Department of Energy (DOE), Office of Biological and Environmental Research (BER), as part of BER Subsurface Biogeochemical Research Program (SBR), under award DE-SC0018042.

## Authors and contributors: ##

Anzy Lee, Ph.D.
Postdoctoral Scholar
Department of Civil and Environmental Engineering
Utah State University

Xiaofeng Liu, Ph.D., P.E.
Associate Professor
Department of Civil and Environmental Engineering
Institute of Computational and Data Sciences
Penn State University

## License ##
MIT License