Contaminant transport with adsorption and their inverse problems |
| |
Authors: | J Ka?ur M Reme?íková B Malengier |
| |
Affiliation: | (1) Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava, Slovakia;(2) Department of Mathematical Analysis, Research Group NfaM2, Ghent University, Galglaan 2, 9000 Gent, Belgium |
| |
Abstract: | In Constales et al. (water Resources Res. 39(30), 1303, 2003) dual-well tests are used to reconstruct the flow and dispersion parameters in contaminant transport. A tracer
is introduced by the injection well, which is considered to be in steady-state regime with the extraction well. Then, from
measurements of the time evolution of the extracted tracer (breakthrough curve) the required model data has been recovered.
In Constales et al. (water Resources Res. 39(30), 1303, 2003), a very precise numerical method has been developed for the solution of the direct problem. In Kačur et al.
(Comput. Meth. Appl. Mech. Engo. 194(2–5), 479–489, 2005); Remešiková (J. Comp. Appl. Math. 169(1), 101–116, 2004) an extension has been discussed which adds adsorption terms to the model. The inverse problem of determination
of sorption isotherms in nonequilibrium mode was solved by a Levenberg–Marquardt iteration method. In the present paper we
develop the adjoint system to evaluate the sensitivity of the solution (via the breakthrough curve) on the sorption parameters
in equilibrium and nonequilibrium modes. Possible use of the adjoint system in determining the several parameters occuring
in the model is a crucial point for iteration methods. The obtained model parameters then can be used in a 3D flow and transport
model with adsorption. The numerical experiments we present, justify the used method. |
| |
Keywords: | Inverse problems Parameter identification Adjoint equation Transport of contaminants Dual-well tests |
本文献已被 SpringerLink 等数据库收录! |
|