2013 NGWA Summit — The National and International Conference on Groundwater

Finite Difference vs. Finite Element — Numerical Methods

Monday, April 29, 2013: 8:00 a.m.-9:40 a.m.
Regency West 6 (Hyatt Regency San Antonio)
Numerical methods to predict groundwater flow and contaminant fate and transport have been available to the industry since the initial introduction of MODFLOW by the USGS in 1988. Since that time both finite difference and finite element methods have grown in availability, with both 2-D and 3-D capability. Communicating model output to both regulatory agencies as well as the lay stakeholder is essential to model acceptance, but identifying model vulnerability and potential for error is often overlooked. This session will provide a platform for those who use models and other numerical tools to showcase their work and report on lessons learned.
Moderator:
Kristine Uhlman, RG
Consulting Hydrogeologist, Tucson, AZ

8:40 a.m.
Recharge and Perched Aquifers Below Irrigation Areas: A Variable-Saturation Model

J. A. Woods, PhD, National Centre for Groundwater Research and Training
Andrew Telfer, Australian Water Environments
Adrian D. Werner, National Centre for Groundwater Research and Training, Flinders University
9:00 a.m.
Simulating Groundwater-Surface Water Interactions Using High-K Cells and Uniform Thickness Model Layers

Christopher S. Heppner, Ph.D., Erler & Kalinowski, Inc.
Vera H. Nelson, P.E., Erler & Kalinowski, Inc.
9:20 a.m.
Dynsystem – Lessons Learned from 30 Years of Finite Element Modeling Applications

Robert H. Fitzgerald, P.E., CDM Smith
Karen E. Kelley, P.E., CDM Smith
Matthew Gamache, P.E., CDM Smith
Kristina K. Masterson, P.E., D.WRE, CDM Smith
Brendan M. Harley, Sc.D., P.H., CEng, CDM Smith
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