OneD – Excel Implementations of Analytical Solutions for One-Dimensional (1-D) Transport of Solutes in Groundwater
OneD solutions are capable of representing the following physical transport processes:
- 1-D advection with a uniform Darcy flux;
- 1-D dispersion (mechanical dispersion and molecular diffusion);
- Linear, equilibrium sorption; and
- First-order transformation reaction.
OneD_1 – Excel-Based Analytical Solution for One-Dimensional Solute Transport with a Type 1 (Dirichlet) Boundary Condition at the Inlet
KEY FEATURES
- General time-varying source concentration history can be specified, with the automatic creation and display of the source history
- A non-zero initial concentration may be specified
- User- Friendly Input / Output
- Breakthrough curve and concentration-profile plot output in Excel and .PNG formats
OneD_3 – Excel-based Analytical Solution for 1-D Solute Transport with a Type III (Cauchy, Robbins, radiation, natural) Boundary Condition at the Inlet
KEY FEATURES
- General time-varying source mass flux history can be specified, with the automatic creation and display of the source history
- A non-zero initial concentration may be specified
- User- Friendly Input / Output
- Breakthrough curve and concentration-profile plot output in Excel and .PNG formats
OneD_FL – Excel-Based Analytical Solution for 1-D Solute Transport Across a Finite-Domain with a Type I (Dirichlet) Boundary Condition at Both Ends
KEY FEATURES
- Generalized solution of Al-Niami and Rushton (1977) to include reactions and more general initial and boundary conditions
- Solution can accommodate advection with or against diffusion, and purely diffusive transport
- General time-varying source concentration history can be specified, with the automatic creation and display of the source history
- A non-zero initial concentration may be specified
- User- Friendly Input / Output
- Breakthrough curve and concentration-profile plot output in Excel and .PNG formats
The Excel program can produce breakthrough curves and concentration profiles in accordance with user specifications.
REFERENCES
ONED, 2002. Analytical Solutions for One Dimensional Solute Transport for Type I and Type III Inflow Boundary Conditions (ONED_1, ONED_3, ONED_FL). S.S. Papadopulos & Associates, Inc.
Al-Niami, A.N.S. and Rushton, K.R., 1977. Analysis of flow against dispersion in porous media, Journal of Hydrology, Volume 33, Issues 1–2, Pages 87-97, ISSN 0022-1694, doi: 10.1016/0022-1694(77)90100-7
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