Benchmark

Reactive Transport

J. Carrayrou, M. Kern, A. Bourgeat, H. Van Duijn, P. Knabner, S. Bryan

We will present the benchmark proposed by GdR MoMaS for reactive transport. The objective of this benchmark is to compare the numerical methods used for solving a reactive transport problem in porous media. According to the interests of GdR MoMaS, the reactive transport problem should be representative of the nuclear waste disposal problem. We want to interest a community as large as possible: geochemistry, hydro geology, numeric, applied mathematic... Nevertheless, the high complexity of both transport and chemical phenomena occurring in such a system may be an obstacle for some researcher how are not familiar with hydro-geological and geochemical concepts. The problems proposed here are also build on the same mathematical concepts as real hydro-geochemical problems, but they description has been simplified. The difficulty for building this benchmark was also to provide a sufficient simple problem without loss of mathematical and numerical difficulties.

This benchmark consists in three independent parts, ranked by complexity:

Easy

Medium

Hard

Each part consists of a 1D and a 2D reactive transport problem. The flow and transport phenomena are the same the three parts. From one to the other part, some chemical phenomena are added increasing the difficulties.