Engineering Commons^™

A [Very Brief] Primer On Groundwater Law, Lawrence J. Macdonnell

Uncovering the Hidden Resource: Groundwater Law, Hydrology, and Policy in the 1990s (Summer Conference, June 15-17)

12 pages.

Contains references.

Optimal Linear/Nonlinear, Quantity/Quality Management Of Complex Multilayer Aquifers By Embedding, Ali Gharbi, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

The embedding optimization modelling approach is adapted to aid long-term groundwater quality and quantity management of complex nonlinear multilayer aquifers. Implicit block-centered finite-difference approximations of the quasi-three-dimensional unsteady flow equation, and Galerkin finite-element approximations of the twodimensional advection-dispersion transport equation are embedded as constraints in the model. Other hydrological processes are also included as constraints. Cyclical linear differencing permits representation of nonlinear transport, even when contaminant is extracted by unsteady pumping (a decision variable). Also used are nonlinear (discontinuous derivative) constraints describing drainage, stream-aquifer interflow and evapotranspiration. The use of both linear and nonlinear formulations of the entire flow and …

The Use Of Advanced Technologies In Indiana Department Of Transportation, Thomas R. Kruse, Kumares C. Sinha, Ted M. Andrews, Jon D. Fricker, James Samuel Bethel, Michael J. Cassidy, Jorge A. Vanegas

JTRP Technical Reports

The report presents the findings of a study that investigated the potential uses of new technologies in INDOT. A survey of state transport agencies were conducted and the major groups of technologies identified are: CADD, GIS, Advanced Survey Techniques, Knowledge-Based Expert Systems, Planning and Programming Mdels, and a workshop with the INDOT executive staff were conducted to determine the priority areas for advanced technology applications. Suggestions were then made for the development of a new technology program within INDOT.

Optimal Groundwater Quantity/Quality Planning For Salt Lake Valley, Ali Gharbi, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

Generally, the embedding technique for optimizing groundwater management has been limited to small scale or steady-state groundwater flow management cases. The embedding approach causes sparse, highly structured constraint matrices which have been sometimes difficult to solve. Embedding applications have been limited by lack of: optimization algorithms able to easily address such matrices for large scale problems, and efficient methods for addressing common nonlinearities and converging to a solution. Computer software, USUEM, addresses these issues by: creation of alternative linear, nonlinear, combined and partitioned formulations of the same problem, implemention of an efficient cycling procedure, and good selection of optimization algorithm …