HYDROCOIN (Hydrologic Code Intercomparison) Level 1: Benchmarking and Verification Test Results with CFEST (Coupled Fluid, Energy, and Solute Transport) Code.

摘要

The US Department of Energy (DOE) participated in the international hydrologic code intercomparison (HYDROCOIN) project organized by the Swedish Nuclear Power Inspectorate for the purpose of improving our knowledge about the influence of various strategies for ground-water flow modeling for the safety assessment of final repositories for nuclear waste. The HYDROCOIN project consisted of three levels of effort: (1) Level 1 was concerned with verifying the numerical accuracy of the code, (2) Level 2 was involved with validation of models using field experiments, and (3) Level 3 was concerned with sensitivity and uncertainty analysis. In the HYDROCOIN Level 1 effort, seven cases were defined. The definition of each case included the input parameters, governing equations, output specifications, and format. The Coupled Fluid, Energy, and Solute Transport (CFEST) code was applied to solve Cases 1, 2, 4, 5, and 7; the Finite-Element Three-Dimensional Ground-Water (FE3DGW) Flow Model was used to solve Case 6. Case 3 was ignored because unsaturated flow was not pertinent to the Salt Repository Project. This report presents the Level 1 results furnished by the project teams. The numerical accuracy of the codes is determined by: (1) comparing the computational results with analytical solutions for cases that have analytical solutions (Cases 1 and 4), and (2) intercomparing results from codes for cases that do not have analytical solutions (Cases 2, 5, 6, and 7). Cases 1, 2, 6, and 7 relate to flow analyses, whereas Cases 4 and 5 require nonlinear solutions. 7 refs., 71 figs., 10 tabs. (ERA citation 14:014413)