Integrated, process‐based numerical models in hydrology are rapidly evolving, spurred by
novel theories in mathematical physics, advances in computational methods, insights from …

The numerical simulation of groundwater flow through heterogeneous porous media is
discussed. The focus is on the performance of a parallel multigrid preconditioner for …

The conjugate gradient method of Hestenes and Stiefel is an effective method for solving
large, sparse Hermitian positive definite (hpd) systems of linear equations, Ax=b …

This report documents PCG2: a numerical code to be used with the US Geological Survey
modular three-dimensional, finite-difference, ground-water flow model. PCG2 uses the …

The problem of solving large, sparse, linear systems of algebraic equations is vital in
scientific computing, even for applications originating from quite different fields. A Survey of …

Recent studies dealing with methodologies for describing contaminant migration in complex
groundwater flow systems are summarized. Emphasis is placed on the role played by …

The influence of aperture variability on dissolutional growth of fissures is investigated on the
basis of two‐dimensional numerical simulations. The logarithm of the fissure aperture before …

The design of a monitoring network to provide initial detection of groundwater contamination
at a waste disposal facility is complicated by uncertainty in both the characterization of the …

The literature on the application of simulation-optimization approaches for management and
monitoring of coastal aquifers is reviewed. Both sharp-and dispersive-interface modeling …

This paper presents the development of the rigid block version of discontinuous deformation
analysis and its preliminary application in rockfall simulation. Modifications, including the …